Suicide bombers and gunmen attacked the Iranian parliament and Ayatollah Khomeini's mausoleum in Tehran on 7 June, killing at least 13 people. IS claimed responsibility, and threatened more attacks against Iran’s majority Shi'ite population. Iran's Revolutionary Guards blame their regional rival Saudi Arabia. Sunni Saudi Arabia denied any involvement in the attacks, but the assault further fuels tensions between Riyadh and Tehran as they vie for control of the Gulf and influence in the wider Islamic world. The attack happened one week after the meeting between Donald Trump and the Saudi leaders (who support terrorists). Trump said that he prayed for the attack victims but added, ‘States that sponsor terrorism risk falling victim to the evil they promote.’