The U.S., U.K. and Canada- Moncler Outlet each took new steps to further isolate Iran's financial sector, and France called for more such measures by the international community in the wake of a recent report that Tehran is working to develop nuclear weapons. On Monday, French President Nicolas Sarkozy called the Iranian regime an "urgent threat to peace" and advocated tougher steps by the international community, including freezing the assets of the Iranian central bank and suspending purchases of Iranian oil-Monclet sale . The Obama administration's steps represent a more incremental strategy, balancing tougher measures against the concern that pushing too hard would disrupt global oil markets, and thus the U.S. economy. Iran is one of the largest oil exporters in the Organization of Petroleum Exporting Countries and supplies about 4% of the world's oil. The Treasury Department also added a fresh slate of sanctions meant to further squeeze Iran's battered oil sector and its petrochemical industry, one of the country's biggest export earners after oil. Administration officials said both measures would make it harder for Iran to maintain current output levels, and so increase-Monclet sale financial pressure on the regime.