The United Nations says international donors have pledged $434 million to aid more than 600,000 Rohingya refugees who have fled to Bangladesh to escape ethnic cleansing in Burma. The pledges at a one-day donor conference came as refugee agencies warned more than 1,000 Rohingya continue to cross each day, fleeing rape, killings and the burning of their villages in Rakhine state. The pledges came as the Trump administration said it was withdrawing military assistance units from Burma and considering sanctions against Burmese officials believed to be behind “violent, traumatic abuses.”