united states and all around the world. i'm bianca nobilo. max foster has the week off. just ahead for you -- >> fresh warning from a leading critic of donald trump about the danger opposed by the former president to american democracy. >> if you thought he was going fast and furious the first time around, you've seen nothing the second time around. >> as israel expands its ground offensive, a big deer general says that tanks will once again be central to israel's warfare strategy. it is tuesday, december 5, 9:00 a.m. in london, with just six weeks to go before the iowa caucuses, four republican candidates are set to face off in alabama on wednesday for the fourth presidential primary debate. ron desantis, nikki haley, chris christie and vivek ramaswamy will meet in the smallest debate so far. doug burgum failed to qualify and announced that he was ending his campaign. he said the decision came from a place of caring deeply about every american and a mission to re-establish trust in america's leadership and institutions of democracy. while this primary process has shaken my trust in many media organizations and political party institutions, it has only strengthened my trust in america. donald trump will skip the debate as he has all three of the previous meetups. he will attend a florida fundraiser instead. former u.s. house republican liz cheney has new warnings about donald trump saying that the vote for the former president could be the last elections in which americans get to vote. while out promoting her new book, cheney predicted if donald trump wins re-election, he will absolutely try to stay in power forever. kristen holmes explains. >> reporter: a fresh warning from a leading critic of donald trump about the danger posed by the former president to american democracy. >> a vote for donald trump may mean the last election that you ever get to vote in. >> reporter: those comments come as trump attempts to turn the table on such warnings. >> joe biden is not the defender of american democracy. >> reporter: the former president who is facing felony charges over his attempts to overturn the 2020 election claiming president joe biden is the real risk to the country. >> joe biden is the destroyer of american democracy. it is him and his people, they are the wreckers of the american dream. >> reporter: a spokesman for the biden campaign calling trump's comments a desperate attempt at distraction. trump's attacks come as biden and his allies frame the election as a choice between democracy and authoritarianism. and even as the first votes in the republican nominating contest won't be cast for another six weeks. >> you have to stand up for american values. embedded in the constitution, declaration of independence. because we know the extreme heists have proven that they won't. we have as to tan up because maga extremists have made it clear they won't. >> they rigged the presidential election in 2020 and we're not going to allow them to rig the presidential election in 2024. >> reporter: he also suggested that the u.s. constitution should be terminated in a social media post. and the former president has outlined plans to dramatically reshape the federal government including a pledge to use the justice department to target political opponents. >> if i happen to be president and i see somebody who is doing well and beating me very badly, i say go down and indict them. mostly that would be, you know, they would be out of business. they would be out. they would be out of the election. >> reporter: the former president has also said that he would make it easier to fire civil servants so he could replace them with loyalists if he was elected again and he would also expand on his hard line immigration policies including calling for mass deportation. he has really laid out in great detail what a trump second term would look like. and he still remains in first place in the gop primary according to a number of polls and with just six weeks until the iowa caucuses, he is also leading among republicans in that state as well. kristen holmes, cnn, washington. >> trump may be holding on to his political lead, but he is losing the fight to talk as he wishes with the fraud case against him in new york. trump's bid to overturn the gag order has been denied and will remain in place through at least next monday when he is expected to take the stand to testify. the former president's lawyers filed a motion monday to let them appeal the gag order and accused the attorney general's office of trying to run out the clock on the trial to keep trump's silent. >> right now president trump can't even comment on why he believes he is not getting a fair trial here in new york. that's what we're going to do, we'll run out the clock on president trump's rights. >> and george santos is making videos for a platform cameo less than a week after he was ex expelled from the u.s. house. he is charging $200 per video message and john fetterman of pennsylvania paid for one, meant as a jab at his embattled colleague of robert menendez who santos referred to as bobby. >> hey bobby, i don't think that i need to tell you, but these people who want to make you get in trouble and want to kick you out and make you run away, you make 'em put up or shut up. you stand your ground, sir, and don't get bogged down by all the haters out there. stay strong. merry christmas. >> fetterman and several other democrats are calling for menendez to resign over corruption and bribery charges. >> if you expel somebody like, you know, george santos, how can you allow somebody like senator menendez remain in the senate too. because i promise you that one of the major differences between representative -- former representative santos and senator menendez is $300 million of munitions, you know, with egypt as well too. and santos has been beinever be accused of being a foreign agent. there are serious issues here and we really need to expel menendez in order just to be fair. the u.n. secretary-general is criticizing israel's order for residents of gaza to evacuate saying there is nowhere safe to go. israeli forces have moved their ground campaign into southern gaza in an effort to root out militants. they say they have circled the jabalia refugee camp. and the israel defense forces tell cnn that ratio of two palestinian civilians killed in gaza for every that makes militant is tremendously positive given the challenges of urban combat. nearly 16,000 people have been killed in the enclave. and live now to paris where melissa bell is following the developments for us. melissa, what has been the reaction to that statement from an isreali spokesperson about the civilian casualty ratio? >> reporter: it probably brings questions fairly quickly about where it can be expected to end. not just in terms of of course the idf determination to root out hamas militant, but what it means for the civilian population of gaza, that that ratio should be accepted and acceptable, raises all kinds of questions for what happens next inside the gaza strip and this is something that the humanitarian agencies have been warning about for some many weeks. the latest on the ground that we're hearing is that there are aerial bombardments to the south of gaza now that the ground operations have been spread throughout. but the real aim we understand from the israeli defense minister who spoke to this only last night is that the operations that are kind of going on in the north of the gaza strip are aimed at entirely breaking gaza city and everything north of there. and that the expectation on the part of the idf is that that should be happening fairly soon. so you are seeing that targeting of the jabalia refugee camp now entirely encircled. also we've been hearing a great deal of artillery fire and aviation raids on the hospital complex in the north of the gaza strip already under tremendous strain as we've seen throughout it. the hospitals in which civilians are seeking refuge. but this is what the idf has to say -- >> we're pursuing hamas wherever hamas is hiding. in the north, and in the south. every rocket launcher, weapons depot, command and control center, senior commander, underground infrastructure and any hideout where our hostages may be held, our war is against hamas, not against the people of gaza. >> reporter: but of course for the people of gaza who are seeking refuge in and around hospital complexes where they can, bianca, that is of little comfort. there is at this stage 1.9 million people that have been displaced by the conflict already. and as the u.n. has been warning, there is simply nowhere for them to go. >> melissa, there has baeen new efforts from the u.n. emphasizing how this is a civilian catastrophe and israel is not making any changes to try to avoid any civilian deaths. and there is pressure from the u.s. and their expectations for israel. is there any evidence yet in israel's actions that they are trying to be more precise or changing their tactics at all to take this international pressure into account? >> reporter: i think what you saw in the immediate aftermath of the calls amid the resumption of the fighting were the leaflets dropped around the gaza strip, kahn yunis for instance, warning that this was now becoming the focus of their next military activity, warning civilians to get out. the trouble is with the near blackout of communications, and we've heard more confirmation this morning that at this stage there is no internet available right now inside gaza, it is very difficult to see what hope there could have been that these messages that came in the shape of qr codes that were meant to be delivered to civilians urging them to move to stafer parts could even have been received. the added pressure of course is that the pressure had already been on the south in terms of the humanitarian catastrophe unfolding. and the extra pressure that these bombardments now throughout the gaza strip are bringing will only bring of course a great deal more misery to an already impossible situation there in the south of the gaza strip. >> madeelissa bell, thank you f joining me today. and with criticism of the israeli bombardment growing, brigadier general insisted that the israeli military make sure cities and buildings are clear of civilians before launching any strikes. jeremy diamond gained access to the tank hole to learn about their methods on the battlefield. >> reporter: as israel expands its ground expansive into southern gaza, this brigadier general, head of the armored co corps, says tanks will be central to the warfare strategy. >> reporter: and israeli tanks cleared the way for infantry troops to move into dangerous and densely populated cities. >> they are using the tanks to clear the area? >> exactly. >> reporter: and he says that this kind of coordination is a lesson learned from russian failures in ukraine. >> we saw where the russians fought only with tanks alone, they were more vulnerable. this combination of combined power overcomes almost every problem on the battle field. >> reporter: israeli tanks are pushing through, not around, residential buildings. reducing entire neighborhoods to rubble to minimize the risk to israeli troops. but that also means that you have to destroy a lot of residential buildings. >> that is exactly what we do. we destroy but we make sure that these buildings don't have citizens and we just destroy what we have to destroy. >> a lot of civilians are dying in gaza. >> but we make sure before that we defend gaza,. >> reporter: israeli tanks are also a top target. in a series of prop begaaganda videos, hamas fighters are seen pushing the tanks and he says theplosions show the anti-missile in action. his troops though are paying a heavy price. >> translator: first rpg that was fired penetrated it and i got hit by the shrapnel. >> reporter: during a visit to wounded soldiers, the general says that his corps has suffered more casualties per capita than any other. >> translator: this is because we are on the frontline. the tank corps is a corps that is winning this war. this is our eremy diamond, cnn. and the intensified attacks are causing the few operating hospitals to be flooded with people needing medical treatment. s can pldisplaced residents believed that they were in a safe area but the attacks continued. one says that there is no safe area in all of the gaza strip. here is more from a father trying to save his newborn son. >> translator: she tthey told u leave gaza. there is a war in gaza and so we came to the south just like they asked. but this is what we found in the south. what can we do? this is my son. he was born on the second day of the war and we haven't been able to register his birth yet. >> aid agencies say that tens of thousands of displaced palestinians have arrived in rafah the past two days. and the recent evacuation order creating panic, fear and anxiety and shelters are overcrowded increasing the risk of disease. and the world health organization is also worried about major outbreaks in the area. w.h.o. oig offficials say they afford any further decline in gaza's health system. >> we're hearing of 200 people sharing one toilet. so with toilets overflowing, open defecation, these kind of conditions are ripe for the spread of disease and we're seeing increased numbers of respiratory infections, of diarrhea. we've had over 1100 cases of jaundice, which would make us concerned about the spread of hepatitis as well as terrible skin infections. scabies and head lice and so on. a broorther and sister free by hamas are reunited.d. ththe 20-year-old and 18-year-o had been attttending the n nova music feststival when ththey we abducted. and heher ininjuries werere not threatening thankfully. the siblings were greeted by a cheering crowd in israel on monday. multiple u.s. officials tell cnn that negotiations over release of additional hostages in gaza appear highly unlikely to resume anytime soon. the white house has said that there is one american woman and seven men unaccounted for after the october 7 hamas attacks. u.s. national security adviser jake sullivan says securing their release of is paramount priority. >> we continue do everything in our power under the president's leadership and guidance with his direct involvement and participation to try to bring all of these americans home as well as all of the hostages and we won't rest until we have succeeded in doing so. right now hamas is refusing to release civilian women who should have been part of the agreement. and it is that refusal by hamas that has caused the end of the hostage agreement and therefore the end of the pause in hostilities. still to come, the u.s. is running out of money to help ukraine as russia's bombardment continues. republican senators are threatening to block a crucial new aid package. and the governor of arizona is speaking out after a border crossing was shut down i in her state. what she h had to say y just ah. ukrainian president volodymyr zelenskyy will appear remotely at a class ficlassifie briefing on capitol hill. and the white house is pushing congress to approve more funding warning that the u.s. will kneecap ukraine on the battlefield without it. melanie zanona has more. >> reporter: there is growing doubt in washington that congress will be able to pass a package for additional aid for israel and ukraine at least before the end of the year. at issue here is a complicated debate over the border. republicans are insisting that stricter immigration and border security provisions be attached to any additional aid for ukraine. there was a working group, a bipartisan group, that was trying to hammer out a deal on the border, but we're told that over the weekend those talks hit an impasse. so we'll see where the discussion goes from here. now, chuck schumer has signaled that he will just put a package on the floor to provide aid for israel and ukraine without the additional provisions and essentially dare republicans to vote against it. so far republicans are saying that they are not backing off. >> this side of the aisle has been clear that it must include funding and policy reforms to address the crisis at the southern border. and if that doesn't happen, we will not proceed. >> democrats want to be reasonable on him grace. we -- immigration. we're willing to make concessions but we won't keep going in circles if republicans are not even interested in meeting us halfway. >> reporter: and the white house stepping up their messaging warning that if the united states does not pass additional funding before the end of the year, that it will kneecap the country in its war against russia. and the senate will have briefings on tuesday. but at this point no signs that republicans are backing down and unclear what if anything that they will be able to pass. melanidical an in. and stopping two ports of entry is causing some frustration. eagle pass was shut down and reduced at the lucasville. and a current spike in migrant encounters on the southern border is requiring more agents to help border patrol take migrants into custody. the goal for the government is to transfer them to leaks sloca where they can be processed and deported if there is no legal basis to stay in the united states. but arizona's governor says she is frustrated with the decision. >> we need the federal government to act and provide more resources and we've been very clear about that consistently. this is a bad decision that impacts our border security, it hurts our economy because it is putting a damper on trade and tourism. >> the u.s. supreme court heard arguments on monday about the controversial opoid settlement. the company promoted the oxycontin for years. the sackler family would pay up to $6 billion to victims of the opoid crisis and they would be protected from future opoid related oig lalawsuits. the u.s. justice department wants the supreme court to review it. some justices emphasize that most victims are in favor of the deal. and los angeles prosecutors have charged jared joseph powell with murder for allegedly killing three homeless men last week. police believe that he shot them while he was sleeping on sidewalks or in allies. powell is also accused of killing another man during a robbery at his home. he was in court monday, but he wasn't able to enter a plea since his arraignment was pushed to january he is being held without bail. the public defender's office says that they are committed to presenting a vigorous defense for mr. powell. and investigators are still trying to find a motive. the "washington post" reports that the u.s. has set records for the highest number of deaths from mass shootings and hice number of mass shootings in a single year. a shooting in dallas over the weekend pushed the u.s. past that tragic milestone. a 21-year-old is suspected of killing a toddler and three adults at a neighbor's house. according to the analysis done by the "post," most occur in private homes. as of december 4, there have been 38 mass killings with guns this year. the "post" defines a mass shooting as four or more people killed not including the shooter. the newspaper says 197 people have been killed in those shootings this year and 91 injured. the "post" used its own metrics with data compiled from other news and academic sources. we're hearing new witness accounts of hamas atrocities and israel is begging the word not to look away. when we come back. welcome back. nearly two months after the shocking attack on israel, the israeli military says it won't wait for the end of the war to start investigating into the failures of preventing the attack. among the issues to be studied is the decision to move troops to the west bank in the days before the massive assault. channel 11 reported sunday that more than 100 reinforcement combat troops w