"Hitler, thank you so much for stopping by tonight, and might I add, you're the worst," is how Conan O'brien welcomed the Fuhrer to his show.

"Please convey our deepest appreciation to the Israeli people and government who have been so compassionate and thoughtful during the worst moment of our lives," the letter read.

The video, which made the rounds on YouTube before being shut down at the behest of the Saudi government, shows the “driver” preach the merits of “jihad” to young passengers.

Saudi delegation stormed out of the meeting following a speech by Iraqi Foreign Minister Ibrahim al-Jaafari in which he defended the Shi'ite Hashd Shaabi militia grouping.

Some major Western powers, not only Russia, have also been considering the possibility of a federal structure for Syria.

Aminata Toure, a former prime minister, is adamant that women should be playing a leading role in politics.

Fighting has slowed considerably since a fragile "cessation of hostilities agreement" brokered by the United States and Russia came into force almost two weeks ago.

The CNN-hosted debate between the four remaining Republican candidates took place at a crucial time, days before primary votes in Florida and Ohio.