Objectives. We offer spers and tailored solutions for Small Businesses and major corporations. Hat can we do for you . And yours, bbc world news america. Reporting from washington,. Violence erupts in kiev between police and protesters. At least 13 people are killed in the deadliest day of the demonstrations. Tens of thousands take to the streets in venezuela and a dwindling number of fewer are making the migration each year n north america. Welcome to ow views on Public Television in america and around the globe. In the world violence since the protests began, at least 13 people have been killed in ukraine today. Police have stormed independent scare in kiev using grands, water bullets and water cannons. Thousands of protesters are holding their ground. We look at the deepening crisis which has repercussions beyond ukraines borders. The apocalyptic scene in central kiev tonight, a firewall of blazing tents and smoking tires, of protesters defiantly firing firecrackers and other things. The police using water cannon trucks to push their way through. This protesters says shes not afraid. Ive been standing here three months already, she says. Im here for ukraine and for my family. Earlier, from inside the protest camp, the Opposition Leader vitale aklitschko urged his supporters to stay put. Each of you here should stay strong in spirit, he said, because were not going anywhere. A new and deadly phase in the fight for ukraines future, which had earlier turned the center of the city in a virtual war zone. Protesters throwing malto have cocktails and police with stun grenades and reportedly live ammunition. The clashes lasted for hours and left deaths on both sides as well as hundreds injured. Here, a wounded demonstrator being helped. Here, a policeman being hurried to safety. The worst day of violence since protests erupted 12 weeks weeks ago after the path rejected a farreaching trade deal with the e. U. In favor of ties with russia. At the heart of the protests in the ukraine are two opposing visions of the countrys future. From people, especially older russians want to stay close to russia, but others, younger and western ukrainians want to break free of russias influence and turn westwards towards europe. Divided loyalties which some fear could end up splitting the country down the middle. Yesterday it looked as though tensions were sub siding. Signs of a cleanup as protesters were to vacate some buildings in returns for am knellsy. Its not clear what ignited the trouble today but it provided the pretext for a crackdown. The american and european governments say theyre deeply worried. Were appalled by the violence that was already taking place in downtown kiev and reports of armed riots. We continue to condemn street violence and excessive use of force by either side. The force will not resolve the crisis. Tonight, there are reports that the Opposition Leader, mr. Klitschko is meeting the president , but its unclear if negotiations the calm this night of crisis. And for the latest from kiev, i spoke to the bbcs david stern a short time ago. I asked him about the situation there tonight. The situation, the deadly situation, continues. Just about 50 meters down the road is insurance square. Independence square. I can hear the stun grenades exploding. Its not clear what the police are going to do but they are moving into the square slowly. Of course, weve seen fatalities today. He worst violence so far broke out in a number of places around the parliament. Before now it had been concentrated in one area. Now we see the violence spreading and the question is whether the violence will spread even further than kiev or possibly into the countryside outside of the capital and the regions loyal to the president. Could this be a critical moment in ukraines political standoff . Well, weve seen a number of critical moments but yes, it does seem that its reaching another climax. We dont know whats going to happen tomorrow. There are talks that the government said it would introduce a crackdown. They say theyll use all legal means to restore stability. We have talks going on between the opposition and the president and the government and potentially for the president , but the talks in the past have led nowhere. The two sides are nowhere closer to reaching a compromise. The standoff continues and it seems divisions tonight are growing even deeper. The president of chad called today to help stop the escalating violence in the Central African republic. Theres a threat of attack from christian militias. Even though theyre trying to keep the community out of harms ay, theyve been targeted. The vigilantes have just left the village. Now its time for the muslims to bury the dead. Theyre weeping for the local mayor, killed during the night along with his family and another boy. The mayor was his older brother and a rare voice of tolerance in a nation consumed by rage. [wailing] hed held the job for 14 years. But he died here, tied up, shot, and hanged to death beside his son outside the mosque. All but a handful of towles locals have now fled into the bush. Were scared, he says. Where are the french to protect us . Weve been totally abandoned. This was quite a spectacle with 60,000. Now these are all that are left, less than 100 and theyre desperately asking for some International Peacekeepers to come and stay here and ensure that theyre safe. French troops are beginning to push into the countryside. Reinforcements are coming too but not fast enough to protect every Muslim Community now under siege. As for the killers, well, we found these men close by, members of the christian militia group. Theyre high on drugs and delighted about the mayors death but they say it wasnt their work. Its good he died, he says. The mayor was a muslim. We dont want any of them to remain in this country. Even if he was a food man, he was a muslim. There were scenes like this. Crowd of muslims scrambling forward a military effort. Theyve been waiting here for weeks for a plane abroad. The roads are still too dangerous. Theyre hungry and desperate. Some here talk of a long war to come. For now, though, they just want to get out. Bbc news in the Central African republic. Back to thailand. Yet another country in violence between police and protesters today. Authorities attempt told clear several protest sites that had been blocked by the demonstrators. At least four were kill and would dozens injured. We have a report from bangkok and a warning, there are some graphic images. Outside the prms office in bangkok, uneasiness. Here the police are trying to negotiate. No deal. The protest movement will not give up the ground its held here for more than two months. A short distance away, the police tried to push forward and faced fierce resistance. They briefly captured a protest leader. Hat brought rocks. There was tear gas in response. But still the crowd refused to retreat. It was hard to know who was shooting who. This policeman survived a shot in the head and his colleague died from a chest wound. The police tried to hold their ground, firing repeatedly with rubber bullets. Then a grenade into the police line. Landing at their feet. One of them realized the danger, but too late. All were injured. One lost his leg. More bodies and gunfire from the police, this time with live rounds. They left many protesters with serious gunshot wounds, some fatal. That has now become a very tense frontline. A few moments ago it showed how easily violence can erupt when the tensions are this bad. The police say theyll pull back but the protesters are still very angry. Theres is ill the potential for trouble here. As the police w. Drew, the protesters withdrew, the protesters reclaimed the street. Its been one of the bloodiest days of this long conflict and in the end, little has changed. Bbc news, bangkok. Youre watching bbc world news america. Still to come, the importance of a good nights sleep. Athletes are using new technology to make sure every moment of rest counts. Iran said today it wouldnt buckle from the pressure from the International Community as a new round of talks began. Irans six world powers are back at the negotiating tables, this time in search of a permanent seasons answer on irans controversial nuclear program. The stakes are high and both sides are divided on what an agreement should look like. The talks in vienna are aimed at working up spring work for negotiations over the next weeks and months. If the talks are successful, they could put an end to decades of hostility between iran and the west. But both sides are downplaying homes of a quick breakthrough. On monday, irans Supreme Leader said he wasnt optimistic about the negotiations. I have said it before several times, that its an excuse to create enmity. Its against all the odds. Another issue will come up. Pay attention as the u. S. Government has raised the human rights issue, missiles issue and arms. The west says about fights like this where iran enriches uranium. It wants iran to cut back to assure it cant quickly assemble n atomic bomb. But iran wants an end to the sanctions that has battered its economy. It took months of very hard bargaining for the two sides to get this far. The vienna talks are all right first test of their resolve. Both sides are pessimistic but both know this is the best chance theyve had in years to try and find a ash a deal and they know that the cons queenses of failure will be very serious. Venezuela. Tens of thousands of protesters marched down the streets of caracas today. Opposition leader lopez and police face charges of inciting violence. Blaming madulo is three u. S. Officials in the country for inciting the violence, demanding that they leave by tomorrow. Thejoined by the guest from center of studies. What do you think will be the outcome . I think whats different on a this situation is in the past youve had a lot of protests but no issue break with the malaise thats going on between the two, the government and opposition, something that makes a change in wasp whats been occurring. In this action, heo poledo turned himself in take the hit and go to jail for cost, a sacrifice other sop op oppositions havent made. Hugo chavez faced prosests protests but is maduro facing more opposition . Hes also facing a splintered coalition. Members of the coalition are interesting in having his job as well as members of the military. In the 10 months hes been in leadership he hasnt been able to bring all those folks together the way that president chavez had. What role will the military play if these protests continue . A decisive actor in this whole issue. Up to now theyve been in order. They have not come out and made any political statement, not demonstrating any leaning to one side or the other. Theyve just been implementing the law and theyve stayed that way. The moment that you have a member from the military sympathize with the plight of the protesters, things could change. Does the u. S. Have any influence at all here . I would say the United States is used as a bogey man to attribute all of the bad things that are happening so if the oppositions protests, maduro blames that on the United States. Do the venezuelans believe that . I dont think so anymore. The issues of criminality, having to do with corruption and insecurity in general, uncle sam isnt involved in the daytoday lives of the venezuelans. Its the venezuelan government that has. What is the basic issue . Quality of life, freedom of speech . I think its the everyday issues. We like to talk about the bigger issues, usually but here its issues like scarcity. You go to the supermarket and you cant find food. Are you you are Walking Around the town and you get assaulted and rob. These issues are wearing thin on the venezuelan people. Thank you so much for joining us. Tomorrow, president obama will meet with the leaders of north america and canada marking a anniversary of the north american trade agreement. Butterflies in recent years, the number of monarchs migrating has fallen sharply. Will grant reports. Traditionally, millions of monarch butterflies arrive in mexico in the on the second of november, the day of the dead. For the mayans, the brightly covered insects covering the forest like an orange snow represented the souls of the recently demented. This year, however, the butterflies were later than usual and fewer in number. The monarch is an insect under threat. Critics of intensive farming in the United States say the herbicides have removed milk word for the already vay. Although it may appear there are tens of thousands of monarchs still here, their numbers are dwindling fast say environmentalists and theyre trying to bring pressure to bear north americanhe trade agreement. The low numbers of monarch overwintering here in mexico is like a new situation for all of north american governments and people because the people in the states and canada are very involved with the conservation of the monarchs too, the same like in mexico. Countrys one of the best known poe etc. He has delivered about the plight of a monarch, signed by 100 top environmental activists to the u. S. And canadian ambassadors. He says the significance of the butterfly goes beyond the nears tetic. Its our economy because there are many people in the villages who have been leaving every winter that theyre here so people come every day to watch the butterflies. As long as the monarchs still migrate to mexico, that attracts tourists too. And at nature resevers, people like donna castro are finding it harder to make a living. As the number of insects drop, so does the number of people coming to see them, she tells me. Locals sometimes joke that the monarch is the only mexican who doesnt need a visa to cross the border north. The humble butterfly may find it hard to make it on to the agenda. Mid the talks of trailed and security, the leaders might reflect that the fragile nature on which the pact was founded is in danger all together. We all know what its like to struggle from a lack of sleep. Athletes being tired can have a big impact on training and more and more universities here in america are turning to technology to measure their athletes quality of sleep. Jane obrien takes a look. Canadian rower anderson measures everything. His heart rate, his speed. How much he eats and now his sleep. The latest wrarblee Technology Allows him to track how much shut eye hes actually getting and adjust his training cordly. It allows me to accordingly. It allows me to get the overall average. It tracks my heart rate and the wrist band tracks when i actually go to sleep. I try to go to sleep at 8 00. Im to sleep by 9 00 sometimes. It tells me how much light sleep, deep sleep. The technology is the pride of George Washington university. When training starts next season theyll be wearing sleep trackers. Wrist bands that monitor motion will show when and how often his athletes sleep is being interrupted. Just like nutrition. You want an athlete to eat well but its very difficult to monitor it because theyre not in this room. Theyre not in front of you. Same thing with sleep. You try to impress upon them the importance of it but you truly dont know if theyre getting the optimal range. With these devices now theyre telling you that. Research has shown that sleep dep Vacation Deprivation can affect anything, from the amount of weight an athlete can lift, reflexes and the ant to handle stress. But the technology has limitations. At this colin i guessic, sleep is measured by brain activity, eye and muscle movement. Doctors say its the only accurate measurement of sleep quality. That will tell me that a patients most likely in a deep sleep. Wrist band that detect restlessness or movement might be wrongly assuming that the person is awang. Purely based on the fact that motion equals being awake. Thats a very simplified resumption of what seep is are a good night. Mass market sleep workers can provide an overall picture of sleep patterns and duration and experts say that along with other Digital Health monitors they have raised awareness of the importance of sleep for everybody. Jane o. O. Brian, bbc news, washington. Including me. World news america will have a special broadcast from rio de janiero tomorrow. Looking at the special issues brazil faces. Im here in rio de janiero, this stunning city where theyre getting ready for three separate events. The carnival in a couple of weeks then the world cup and then in 2016 the olympics, ill be talking to the mayor of rio to see whether theyre ready for all of that well be looking at the security situation and whether enough is being done to address income inequality in brazil. Thats all on the show tomorrow, live from here in rio. Tune in tomorrow were for that special program. For all of us here at world news america, thank you for watching. America, thank you for watching. 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