Iranian passenger jets 'refused fuel'
Iran says that Britain, Germany and the United Arab Emirates are refusing to provide fuel to Iranian passenger planes.
The move, which has not been confirmed, follows unilateral sanctions imposed by the US, the Isna news agency reported.
The sanctions are designed to impede the development of Iran's nuclear programme.
Iran says its nuclear industry is for peaceful purposes but Western powers fear it is trying to develop a bomb.
"Since last week, our planes have been refused fuel at airports in Britain, Germany and UAE because of the sanctions imposed by America," Mehdi Aliyari, secretary of the Iranian Airlines Union, told the news agency.
Iranian lawmaker Heshmatollah Falahatpisheh said Iran would retaliate.
"Iran will do the same to ships and planes of those countries that cause problems for us," Isna quoted him as saying.