Its a suspicioioshared by britain. Philip hammond British Foreign secretary we formed a judgment that there is a significant possibility that the russian aircraft was brought down by an explosive device on board. Britain, one of 3 countries stopping all flights to the airport where the plane took off. American aircraft have long been warned away from this area. Josh earnest White House Press secretary we obviously have a strong desire to get to the bottom of what exactly happened there. Noone is ruling out a technical fault as the cause the black box recorders are still being worked on. Bill neely nbc news cairo, egypt well the egyptians are really kicking back now. The government minister saying he simply doesnt accept the us theory as fact. But egypt has now fired the head of the airport from where the plane took off and investigators have found really lax security there. The russisis too dont accept the us theory. 23 russian tourist planes are flying into that airport today, but the