US presidential candidate John McCain shrugged off criticism from rival Barack Obama over a gaffe about Iraq, saying on Thursday that all politicians slip up and it was time to "move on".McCain, on a tour of Europe and the Middle East, mistakenly told reporters in Jordan on Tuesday that Iran had backed Sunni militant group al-Qaeda in Iraq. The United States accuses Iran of backing Shi'ite militias there, not Sunnis. Obama, locked in a battle with New York Senator Hillary Clinton for the Democratic presidential nomination, pounced on the mistake the following day, suggesting McCain's support for the Iraq war stemmed from misreading the situation.
"We all misspeak from time to time and I immediately corrected it. Just as Senator Obama said he was looking forward to meeting the president of Canada, we all misspeak from time to time," McCain told reporters in London. "So we'll just move on," the presumptive Republican nominee said after talks with British Prime Minister Gordon Brown at his Downing St residence.