Obama says bomb may have caused Egypt plane crash

US President Barack Obama raised the possibility that a bomb brought down a Russian plane that crashed over Egypt's Sinai Peninsula, undermining efforts by Cairo and Moscow to downplay the suggestion of an attack. With concerns over security mounting, a number of European airlines readied to bring home thousands of tourists from the Red Sea resort of Sharm el-Sheikh, where the plane took off last Saturday. "I think there is a possibility that there was a bomb on board and we are taking that very