the ukrainian government now says it will ask turkey to stop russian navy ships from entering the bosphorus strait earlier russia deployed additional surface to air missiles in junk or that's in the disputed region of crimea and this all comes as kiev accuses russia of blocking its vessels from leaving the course of bed and mario paul in the us all see he kiev is asking nato to deploy naval ships to end the standoff let's speak to our correspondent in moscow where we challenge rory we've heard about a number of developments in the last twenty four hours just how significant are they. as far as the tensions in the black sea region right now. well i think you could probably boil all of the things that you just mentioned down to a core of things which is basically that petro poroshenko is trying to shore himself up domestically look strong he's also trying to find a way of putting pressure on russia and he's trying to draw who he hopes are his international friends further into this standoff whereas what russia is trying to do is keep those international friends of the if you crane out of the

the bosphorus brings together two very different worlds istanbul is the only city on earth to span two continents asia and europe the result is a unique cultural mix the car could district was once popular with russian pilgrims the andrea caracalla restaurant is below an orthodox church. this is the roof terrace church is called there's like three more in fifty meters distance one is from fourteenth century. and the other three of them it's in eighteenth century actually start new and you know in our building is built on eighteen eighteen seventy three. every sunday church services are still held up the restaurant it took two and a half years. to restore the old building. the decor in the andrea carter three restaurants is as colorful as the menu. one dish is particularly popular link to cook special menu for cooks. cooks taking part of the sultan's actually this is here in ca to be handy here is the salt this is the what the salt unless we call it from cow to bay and the which is a blend pretty. we're going to put meat on the top that's a huge thing for tookie it's the best recipe to

which they hoped would lead to so now comes from the government of turkey being able to close the bosphorus for example so we see this is a is a pattern of behavior. and i think that the us ambassador to the u.n. and nicky howley is either unconscious of this planning or or is or is part of that strategic planning. in order to support president poroshenko and other u.s. strategic outcomes in the black sea how do you explain the rationale behind poroshenko hearing that you know there is you know a disagreement of a little bit of a coming to in the kitts strait and then he says well let's invoke martial law what's the reasoning. well they're raising it as it was that he needs to gain in stature with the ukrainian electorate in preparation for their march thirty first election next year otherwise you'll get to machine code he's a walk over to take the presidency from him he can by invoking martial law which is seemingly out of step with the reality of the security situation of this occasion but by and looking at he also has the opportunity under martial law to postpone the elections or to some

there are geographic choke points to remove the suez, bosphorus and so forth, and then there is the tyranny of geography. the oil is one place and it's needed somewhere else and then there is the tyranny of nature and politics and then there is the tyranny of too few facilities. this is an interesting one. too few facilities in small looks. if anyone wants to have a building of high blood pressure take a boat to around houston ship channel, that's where 26% of our gaes lean and diesel is made and 60% of the jet fuel in our tiny location and this is rastanura in saudi arabia, in qatar or the port of tock why. and everything is in a small place and the tyranny of smaug geography and even that ter me exists and also the tyranny of open information when that natural gas facility was attacked in algeria i put up google earth on the screen in my classroom, and i focused in on that natural gas facility and i showed my students an open gate. if i can do that, anyone can do that. and the military people in this rm know full well that this is exactly what the bad guys are doing. i can go and see a nu