The American World Cup co-hosts are "very supportive" of Iran playing at the tournament, the boss of US Soccer has told Sky News. Iran 's participation has been thrown into doubt since the US-Israeli military action was launched on Saturday, killing supreme leader Ayatollah Ali Khamenei . And Iranian football federation president Mehdi Taj was reported to have said that "we cannot be expected to look forward to the World Cup with hope" after the attacks, without announcing a boycott. Iran