them. >>> you're watching nik gowing with "bbc world news."top stories, beijing under a thick cloud of hazardous smog with scientists warning it could be deadly. >>> the new ukrainian authorities prepare to announce the proposed new cabinet in independence square later. >>> violence in turkey as the prime minister resists calls for his resignation over what he says are fake audio recordings. >>> world renowned spanish guitarist paco de lucia dies at the age of 66. >>> hello everyone. welcome to the chinese capital beijing. today you can't really see much. there, a large six-lane highway. that's because the smog hanging over the city is the thickest ever. so thick that it's literally off the scale. it's now so bad that hundreds of thousands of people are fearful of doing this, of leaving their homes because of the impact of breathing on their health. this latest pollution has already lasted a week. so how bad is it? well, to the irritation of the chinese government, the u.s. embassy, there is their logo in the top left-hand corner tracks air qu

i'm nik gowing. the latest headlines for you.two airports in ukraine's russian-dominated crimea region have been taken over by groups of armed men. it's not clear who they are. ukraine's parliament is called on the united nations security council to monitor the situation, describing it as an armed occupation. >>> well, let's pick up with what's happening at two airports in the crimea, which is an autonomous region of ukraine largely inhabited by russians and other groups as well. it has the the biggest russian naval base there. the main airport is a joint airfield which is held both by the domestic and civilian parts and also it belongs to the ukrainian defense ministry. the bbc's christian frazier has tried to get into the sevatopol international airport. >> reporter: you might be able to see behind me the control tower and what looks like a military base. you can see there are barriers stopping anyone from entering. a couple hundred yards on, a very professional looking unit. they are carrying high-powered assault rifles, kevla

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