BAGHDAD, Oct 25 (Reuters) - U.S. President George W. Bush, under fire from voters over his policies in Iraq, declared on Wednesday that patience had its limits but said he would not put unbearable pressure on Iraq’s leaders to end the bloodshed.

Speaking at the White House ahead of mid-term elections on Nov. 7 that could cost his Republicans control of Congress, Bush said the United States was determined to stay the course in Iraq but with adjusted tactics to confront a changing enemy.