US diplomats walk out of Tunis ceremony over Iranian insult

US diplomats on Friday walked out of the ceremony to celebrate Tunisia's new constitution after Iran's representative, Majlis Speaker Ali Larijani, accused the United States and Israel of undermining the “pro-democracy uprisings” of the Arab Spring in 2011. The US and Israel, he said had "tried to render these (Arab) revolutions sterile, and to make them deviate from their course so that Israel can benefit."