Iran's involvement in the World Cup has been plagued with uncertainty, linked to the ongoing war in the Middle East and related security concerns.

On 25 May, Iran moved their training base from Tucson, Arizona to the Mexican city of Tijuana, claiming the US were unwilling to host them.

Under the conditions of their visas, they will have to fly in and out of the United States on matchday for each of their three group games.

Less than a fortnight later, on 6 June, they accused the US of denying visas to "integral" members of the national team's backroom staff, with 15 administrative officials denied entry.

The FFIRI had previously presented Fifa with a list of 10 conditions for their participation in the World Cup, including allowing players, coaches and officials who have completed military service with the Islamic Revolutionary Guard Corps (IRGC).

US secretary of state Marco Rubio has said Iran's players will be welcome at the tournament but individuals with links to the IRGC could face entry restrictions.

Iran were the only country not present at Fifa's annual congress in Vancouver in April after a delegation of FFIRI officials, including president Medhi Taj, were turned away at the Canadian border.