forged in blood and this relationship is extremely important for the united states. they wanted to be as strong as possible because the us strategy for countering china is to build up its alliances in asia. at the moment, the us is responsible for south korea s defence, so you have tens of thousands of us troops stationed here. what are the us gets in return is a military foothold here in asia. you get some sense ofjust how important b sides are to each other. lets show some live pictures now of the khartoum skyline you can see there an airport there in the distance. we know that the lines of buses and other vehicles have continued to leave the sudanese capital, of course the rocketing price of fuel and bus tickets. thousands of sudanese have fled to neighbouring countries like chad, egypt and south sudan. the un has expressed concern about the numbers who will need assistance. by the departure of western nationals from khartoum is