Islamic State militants have threatened to behead Barack Obama and turn the U.S. into a Muslim province in the latest gruesome video to emerge from their self-styled caliphate.

ISIS wants to introduce its own currency and plans to bring back solid gold and silver dinar coins, it has emerged.Militants are said to want to bring back the original dinar, which is an ancient currency from early Islam, and religious figures in Mosul and Iraq’s Nineveh province have apparently announced its return in mosques.

On August 22, 1939, Adolf Hitler, explaining his decision to invade Poland, asked, “Who after all speaks today of the annihilation of the Armenians?"

As rt.com reports Islamic State has set fixed prices to sell Yazidi and Christian women who have been abducted by members of the militant group, Iraqi media have reported. The barbaric tariffs range from around $40 for older women to $170 for children.

After the beheading of another Western captive by ISIS, an international conference convened Monday in Paris to talk about how to tackle the threat posed by the Islamic extremist group.

Iraqi President Fuad Masum appealed for international support to fight ISIS in an interview with CNN’s Christiane Amanpour on Thursday.