France led a walkout of a dozen delegations, including the United States, to protest a fiery speech by Iranian President Mahmoud Ahmadinejad to the UN General Assembly.
Delegations from Argentina, Australia, Britain, Costa Rica, Denmark, France, Germany, Hungary, Italy, New Zealand and the United States left the room as Ahmadinejad began to rail against Israel.
Source: http://www.ynet.co.il/