The Iranian dissident cleric Hossein Ali Montazeri has lent his support to opposition protests. The grand ayatollah says it is anti-Islamic to resist the demands of the people. He has also called on the government to declare three days of national mourning in honour of those killed during the clashes.As one of the architects of the 1979 revolution, his words carry considerable weight for some and could be taken as a direct challenge to Iran’s Supreme Leader, Ayatollah Ali Khameini. On Friday he said any opposition leaders would be responsible for bloodshed. Meanwhile, Iran’s President Mahmoud Ahmadinejad has renewed his attacks on Britain and the United States, accusing them of interfering in Iran’s policies.