US urges Myanmar to avoid reprisals after attacks kill 89

An attack by ethnic Rohingya militants in western Myanmar left 12 security personnel and 77 Rohingya Muslims dead in a dramatic escalation of communal violence that has plagued the region, as the United States urged authorities to avoid a response that would inflame the tensions.The office of the country's leader, Aung San Suu Kyi, said Friday that military and border police responded to the attacks by launching "clearance operations."Police fought off groups of as many as 100 Rohingya attackers