Reuters:
"U.S. Secretary of State John Kerry told Congress on Wednesday that an Iran nuclear deal would not be legally binding, meaning future U.S. presidents could decide not to implement it. That point was emphasized in an open letter by 47 Republican senators sent on Monday to Iran's leaders asserting any deal could be discarded once President Barack Obama leaves office in January 2017."
"U.S. Secretary of State John Kerry told Congress on Wednesday that an Iran nuclear deal would not be legally binding, meaning future U.S. presidents could decide not to implement it. That point was emphasized in an open letter by 47 Republican senators sent on Monday to Iran's leaders asserting any deal could be discarded once President Barack Obama leaves office in January 2017."