The News Minute | September 1, 2014 | 05:50 pm IST Seven world leaders have been banned from purchasing duty free products from an airport in Russia, if an image uploaded by an user called Michael Idov on the internet is authentic. Idov recently uploaded this image on Instagram, of a sign at, what he claims is, the 'the international zone of the Vladivostok airport' banning several world leaders including United States President Barack Obama and the Prime Minister of United Kingdom, David Cameron.According to a report in Telegraph, signs refusing entry to Obama have surfaced recently in some shops in Russia in what could be a reaction to the United States' economic sanctions against the country. But Idov is said to have found this sign all the more surprising because of how 'professional' it appeared.