U.S. senators urge Obama to be tough on Iran nuclear programme

WASHINGTON (Reuters) - As talks on a nuclear deal for Iran resumed in Vienna Tuesday, a wide majority of U.S. senators urged President Barack Obama to insist that any final agreement state that Iran "has no inherent right to enrichment under the Nuclear Non-Proliferation Treaty."

That lack of entitlement was one of several principles the 83 senators outlined in the letter. They urged Obama to "insist upon their realization in a final agreement" that six world powers and Iran are hoping to hammer out by late July. The senators also want to prevent Iran from ever having the capacity to build nuclear weapons.