The US President has embarked on a new public relations blitz in a bid to counter growing American scepticism about the Iraq war. As the third anniversary of the US led invasion of Iraq looms, President George W Bush is pleading with Americans to be patient. He has begun a new series of speeches to try to reassure them that Iraq has avoided a civil war, although he has been careful not to promise the violence is waning. "There will be more tough fighting and more days of struggle and we will see more images of chaos and carnage in the days to come," he told a pro-democracy group in Washington.During the speech, Mr Bush accused Iran of contributing to the unrest in Iraq, saying some of the homemade bombs that are wreaking havoc in the country came from Iraq's eastern neighbour. Locked in a test of wills with Iran over its nuclear ambitions, Mr Bush said during a speech about the Iraq war that "some of the most powerful IEDs [improvised explosive devices] we are seeing in Iraq today include components that came from Iran." Quoting his national intelligence director, John Negroponte, Mr Bush said Iran has been responsible for at least some of the increasingly deadly attacks in Iraq. "Coalition forces have seized IEDs and components that were clearly produced in Iran," Mr Bush said.