Iranian hardline students burn pictures of US President Barak Obama shaking hand with former Israeli Prime Minister Ehud Olmert and standing with past US presidents outside the former US embassy, during a gathering to mark the 30th anniversary of freezing Iran and US diplomatic ties in Tehran on April 9, 2009. Some 30 hardline students expressed their opposition to any talks between Iran and the US by burning portraits of the US Presidents outside the former US embassy.