Iranian supreme leader Ayatollah Ali Khamenei, center, leads a Friday prayer at the Tehran University campus, in Tehran, Iran, 14 Sep 2007

Iran's supreme leader Ayatollah Ali Khamenei says U.S. President George Bush will one day stand trial for the war in Iraq.

Ayatollah Khamenei's sharp criticism of Mr. Bush and the United States was punctuated by cries of "Death to America" from worshippers during Friday prayers in Tehran.

The ayatollah said Mr. Bush should be held responsible for the violence in Iraq, and he claimed that U.S. policies in the Middle East and towards Iran are failing.

During his televised address Thursday, President Bush accused Iran and Syria of trying to undermine the Iraqi government, and said they must end their subversive activities.

U.S. officials have repeatedly accused Iran of supplying weapons and training to Shi'ite insurgents in Iraq. Iran denies the charge.

Some information for this report was provided by AFP, AP and Reuters.