Facing resistance, U.S. pushes to meet deadline for Iran deal

By Louis Charbonneau and John Irish WASHINGTON/PARIS (Reuters) - The United States will struggle to secure a framework nuclear deal between Iran and major powers by a March 31 deadline due to resistance from Tehran and scepticism among other countries, officials said. With the two sides resuming negotiations this week, Washington is under heavy pressure as it pushes for the political framework accord that would lay the foundations for a full deal with Iran by June 30. The aim is to curb Iran's s