Whats working and whats not in west africa . Sierra leone an line beria both have come out of civil wars so infrastructure is weak. Systems are weak. For any country. An outbreak like this would be a challenge. But for these countries its very ifill those are just some of the stories were covering on tonights pbs newshour. Major funding for the pbs newshour has been provided by moving our economy for 160 years. Bnsf, the engine that connects us. Charles schwab, proud supporter of the pbs newshour. And the william and flora hewlett foundation, helping people build immeasurably better lives. And with the ongoing support of these institutions and. This program was made possible by the corporation for public broadcasting. And by contributions to your pbs station from viewers like you. Thank you. Woodruff the white house today ruled out accepting irans help against Islamic State forces if it means easing curbs on the Iranian Nuclear program. Reuters and others reported senior officials in tehran had floated the idea. But, a spokesman for president obama rejected military cooperation, sharing intelligence or any sort of nuclear trade. Ifill the man who allegedly jumped the white house fence and made it inside the front door with a knife had more than 800 rounds of ammunition in his car. That word came today as Omar Gonzalez made his First Court Appearance since the friday night incident. A federal prosecutor also said gonzalez was arrested in july with a sniper rifle and a map marking the white house. Separately, White House Press secretary josh earnest confirmed today that security upgrades are under review. There will be a pretty broad look at a wide range of White House Security procedures to ensure that the secret service is accomplishing their mission of protecting the president and the first family but also protecting the status of the white house as the peoples house. Ifill earnest would not say if the secret service might expand the security zone around the white house. Woodruff three Afghan Army Officers who disappeared in massachusetts have been found at the canadian border. Massachusetts state police said today the men were detained at the Niagara Falls crossing. They were last seen saturday near a military base in cape cod where they were training. Authorities said they did not believe the afghans posed any threat. Ifill in eastern ukraine, there were signs of progress as Government Troops and pro russian rebels began pulling heavy artillery from frontline positions. Its part of an agreement reached early saturday. Despite the deal, shelling continued through the weekend near the airport in donetsk, and several more ukrainian troops were killed. Woodruff firefighters in Northern California braced today for the weather to take a turn for the worse. Hotter temperatures and higher winds favored the king fire, burning 60 miles east of sacramento, near pollock pines. Its just 18 contained. The fire has scorched 137 square miles and destroyed more than 30 buildings, but sundays wet weather slowed its advance. A federal bank found guilty for suicide bombings. A jury will decide damages. The first targeted actions of tax benefits for socalled corporate inversion, the practice of moving corporate control overseas to avoid u. S. Taxes. And on wall street, stocks were weighed down by worries over chinas growth and a weak housing report the Dow Jones Industrial average lost 107 points to close at 17,172; the nasdaq fell 52 points to close at 4,527; the s p 500 dropped 16 points to finish at 1,994. Woodruff still to come on the newshour as fears of Climate Change rise, investors move away from fossil fuels. A conversation with the head of the syrian opposition. Money pours in to the race for floridas governor. Afghan leaders reach a power sharing deal. And whats working and not in the fight to combat ebola in west afirca. Ifill more than 100 World Leaders are gathering at the u. N. Tomorrow to discuss the impact of Climate Change and to try to move toward new agreement. But potential action from governments or even a lack of it is only part of the story. Major voices in business, philanthropy, science and the Environmental Movement are announcing their own initiatives this week hoping to mobilize public attention. Hundreds of activists poured onto the streets of new yorks financial district, snarling downtown traffic to protest capitalisms role in Climate Change. Wall street invests in all the polluting, wasteful, toxic, destructive and Disruptive Industries that are causing this crisis. Wall street itself is profiting from the destruction of this planet and its human and natural resources. So we have to stop them. Ifill a short distance away, secretary of state john kerry lent his weight to the cause, opening what organizers are calling climate week. He underlined findings that 2013 saw the largest singleyear increase in Carbon Pollution in 20 years. It doesnt cost more to deal with Climate Change. It costs more to ignore it and to put our head in the sand and continue down this road of obfuscation and avoidance. And we need to make that clear to people in this country. Ifill all of this followed a much larger, worldwide protest on sunday. Hundreds of thousands of activists took to the streets of manhattan. They were joined by hollywood celebrities and by former Vice President al gore, new york city mayor bill de blasio, and United Nations secretary general ban kimoon. If we do not take action now, we will have to pay much more. They have raised their voice, they have shown their power to change the mindset of people. Ifill there were also marches in london, paris, berlin, rio de janeiro, and melbourne, australia. The protests coincide with tomorrows u. N. Climate summit. At the same time, activists got a boost from philanthropists who vowed to stop investing in climate warming fossil fuels like coal and oil. The Rockefeller Brothers fund, built on the familys oil fortune, was the Largest Organization to announce its dropping such investments from its portfolio. Ifill in all, 50 foundations with 50 billion in assets pledged today to divest over the next five years. Advising those foundations was divestinvest philanthropy. Its director, jenna nicholas, joins me now. Welcome. So explain to our viewers what exactly it means to divest . What it means to divest is were seeing this as endowments an individuals that are coming on board to do this is to remove ones holdings from fossil fuel companies. There is an initiative called the carbon tracker 200. For many institutions and individuals are starting with the carbon tracker 200, the 200 of the worst fossil fuel companies in the world. And then many are going much further. So this is coal, oil, gas. And then what were doing is parallelling this side with the invest side. And it is investing in Clean Energy Solutions whether its energy efficiency, renewable energy, ago ago, Water Purification technology and such like. Well, lets focus on the divest side for a moment. Is goal here to incur economic costs on the companies you are divesting from or just shame . Well, a big part of it, and the big motivation for a number of the individuals and endowments that are coming on board here is really this case being made around strand add sets which is really there is an overvaluation of the price of these fossil fuel companies. And that really if we were to burn all the fossil fuels in the world, that the impact that that would have on temperature rises is so much that it doesnt make sense from a financial perspective to continue to invest. So a big part of it is the financial case thats being made for divestment, and another part of it is that shaming piece. And to really try to put pressure on the fossil fuel companies to invest in reserb and development for alternatives and to really move in another direction for the future we have search campaigns involving apartheid across south africa, the company and looking back on them now, its unclear whether they didnt kill those individuals, they didnt stop those industries from producing those products but in the case of appear advertise, youre talking about freedom and in the case of tobacco, were talking about health. What are we talking about here . What is the immediate benefit . A number of things. Just on that point about macking the parallel to appear advertise, south africa, its been really powerful, desmond tutu has spoken out really drawing the parallels between divesting from appear advertise and fossil fuels. And is a great spokesperson for the divest invest campaign. A big part of it here is social justice, climate justice, Economic Justice and really seeing the interconnectedness of all of the issues that arise. This isnt just an environmental campaign, but really seeing the ramifications that this has on a systemic level across the whole of society. So and not really being just about Environmental Justice but really the systems that play at large. And so a big part of this is saying that business is usual, no longer the way that we can be operating moving forward. And yet, universities like harvard, for instance, have said this is not the way that they want to affect their endowment. They figure it would cost them. And thats really not what endowments exist for. And theyve resisted during this movement. What do you say to them . Well, it has been a fascinating few months in term of this. On the other hand we have Standford University, my alma mater that has come on board and can taking a step and starting with divesting from coal and so i think there is a lot of debate going on here. And i think that harvards statement to not engage in this has lead to a lot of engagement from students and alumni and many leaders and financial leaders saying that actually the financial argument is saying around not divesting is not as strong as the financial argument for divesting. So i think its going to be a really interesting process to see how the next few months play out. And our hope that the 50 billion announcement made today and having leaders like Standford University and the Rockefeller Brothers fund on board will really help to drive more of these conversations happening in other institutions and universities. How do we know that socalled Sustainable Investing is not just a fad . So a big part of this, and really weve been seeing this, this isnt just a recent initiative there have been institutions that have been doing Sustainable Investing for a while, the calvert fund in the late 1970s started one of the pioneering Sustainable Investment funds. And many others over the years that have joined the i anybodiative for around Sustainable Investing. And now a lot of banks jpmorgan, goldman sachs, ups, Credit Suisse are developing Sustainable Investing practices. A lot of clients of these banks are coming to them and saying that they want to have more Sustainable Investing options. This really seems to be something thats here to stay. And a big part of that. And a big part of the emphasis that weve been making with this movement of it not just being institutions but really individuals in general is that really the opportunity to be able to have an alignment between values and the investments that these individuals and institutions are making is something that cuts down to the really core essence for a lot of individuals and institutions, so it seems to be weve reached a Tipping Point and this really is a movement that is here to stay. Thank you very much. Thank you, woodruff as president obama readies to make the case against the Islamic State group later this week at the United Nations. The situation on the ground appears more desperate. By the thousands, Syrian Refugees kept pouring over the border into turkey today. Trying to escape fighting near a key border town. Some estimates said more than 130,000 people, mostly kurds, have crossed in the last four days. In their wake, Islamic State militants and Syrian Kurdish militia battled for control of kobane, known also by its arabic name aynalarab. Separately, turkish kurds clashed with Turkish Security forces yesterday and again today, as they sought to enter syria to help their fellow kurds. And, some Syrian Kurdish men who had brought their families to safety queued up to go back to syria. translated we are returning back to fight. We will fight there until the last drop of our blood. If we lose kobani it means we lose the region. Woodruff amid the panicked exodus, a Turkish DeputyPrime Minister said more than a quarter of the regions people have already fled, he expected many more. translated the total population in the area is around 400,000 and we think that some of those people moved to other places inside syria but we still expect an influx of hundreds of thousands of people. Woodruff the weekend also brought news that 49 turkish hostages held by Islamic State militants had been freed. Turkish Officials Say no ransom was paid, nor was it a military operation, but president Recep Tayyip Erdogan did not rule out that a prisoner swap occurred. translated a swap might have taken place or not. 49 citizens have returned to turkey. We wouldnt trade this for the world. This is not an issue that we discuss. Even if there was a swap, as a president , i would think, the lives of 49 citizens are irreplaceable. Woodruff up to now, turkey has rejected a major role in the coalition against the Islamic State group in iraq and, potentially, syria. This morning, secretary of state john kerry suggested ankaras attitude should change. Their border is threatened. Their security is threatened. And they are committed to doing this, but they first needed to deal with their hostage situation. Now the proof will be in the pudding, as i said, and we will work with them very closely in the days ahead. Woodruff but the Islamic States chief spokesman came a call for militants to target western nations who join the fight. translated if you can kill a disbelieving american or european, especially the spiteful and filthy french, or an australian, or a canadian, or any other disbeliever, including citizens of the countries that have waged a coalition against the Islamic State, then rely upon god, and kill them in any manner you can. Woodruff within hours, a Splinter Group in algeria posted video of a kidnapped frenchman. He said hell be killed unless france quits the u. S. Led air campaign in iraq. As for the ground war, president obama signed a bill friday, including 500 million to train and arm a rebel faction the Free Syrian Army to fight Islamic State forces. Senior u. S. Military leaders have said it could take up to one year to train the first 5,000 fighters; and some lawmakers, including republican senator john mccain have questioned the practicality of having the f. S. A. Focus solely on the islamic extremists, and not on the assad government. The chief of the principal political Opposition Group the Syrian National coalition is hadi albahra. He took over in early july and will address the United NationsGeneral Assembly on wednesday. This morning, albahra sat down with chief Foreign Affairs correspondent Margaret Warner in new york. Mr. Al barra, thank you for joining us. President obama, the u. S. Congress have now committed to train and equip the rebels you represent and assist in other ways including air strikes, what do you need most immediately and how soon. We need a clear strategy, clear planning on how to start this program as fast as possible. When we have equipment needed to fight this war, so actually this is one of the main purpose of our visit to the u. S. Right now, to have a program. We need Weapons Systems which can compete with whatever are in the hands of isil forces not to be supplied with inferior Weapons Systems am so we need to fight a war where really we are in equal with weapons and training. Warner how soon dow want to see u. S. Air strikes employed. They should be employed as soon as possiblement because as you will see in the past week, there are thousands of refugees who have fled f