The giant vessel will be berthed in Portland Port in Dorset and will accommodate single adult males while asylum claims are being processed, Britain's interior ministry says.
Deal between Tehran and Moscow comes after the expiry in October 2020 of restrictions on Iran purchasing conventional weapons under a UN resolution, and the jets could be delivered within the next year.
Italy's coastguards launch major rescue operations for three boats struggling in rough seas off Calabria to prevent any repeat of last month's disaster, when a migrant shipwreck killed 74 migrants.
Russia continues its push to take Ukraine's eastern Donbass region with the fierce battle for the key city of Bakhmut growing increasingly deadly as fighting enters its 381st day.
