May 27 (Reuters) - Two U.S. soldiers have been killed in Iraq, the U.S. military said on Sunday, pushing May to the brink of becoming the deadliest month for U.S. forces this year. One was killed by a roadside bomb in western Baghdad, while the other was also killed by a bomb in volatile Diyala province north of the capital. Following are the latest figures for military deaths in Iraq since the U.S.-led invasion in March 2003: U.S.-LED COALITION FORCES: United States 3,454 Britain 149 Other nations 127 IRAQIS: Military Between 4,900 and 6,375# Civilians Between 64,333 and 70,471* # = Think-tank estimates for military under Saddam Hussein killed during the 2003 war. No reliable official figures have been issued since new security forces were set up in late 2003. * = From www.iraqbodycount.net (IBC), run by academics and peace activists, based on reports from at least two media sources. IBC says on its Web site that the figure underestimates the true number of casualties.