Senior Iranian officials charged the U.S. and European powers with backtracking on recent commitments they made in negotiations over Tehran’s nuclear program, assuring a Friday congressional deadline for reaching a deal would be missed. American, European and Iranian negotiators had voiced hope in recent days that a landmark agreement to constrain Tehran’s nuclear program in exchange for a lifting of international sanctions could be reached this week. But Iran and the U.S. on Thursday charged each other with an unwillingness to make crucial political decisions to conclude nearly two years of talks. Senior Iranian negotiators specifically accused the U.S. and its European Union partners of walking back over the past 24 hours commitments Tehran said the six world powers—the U.S., the U.K., France, Russia, Germany and China—made on issues that include sanctions relief and the lifting of a United Nations arms embargo on Iran. On Thursday, Iranian President Hasan […]