ສຫລ ແລະ ອີຣ່ານ ອ້າງວ່າ ການເຈລະຈາ ນິວເຄລຍ ກ້າວໜ້າ

Secretary of State John Kerry boards a plane at the conclusion of another round of nuclear negotiations with Iranian Foreign Minister Mohammad Javad Zarif, in Geneva, March 4, 2015.

U.S. Secretary of State John Kerry delivers remarks in Montreux, March 4, 2015.

U.S. Secretary of State John Kerry remarks that significant gaps and important choices remain in discussions on Iran's nuclear program, in Montreux, March 4, 2015.

U.S. Secretary of State John Kerry, third from left, meets with Iranian Foreign Minister Mohammad Javad Zarif, third from right, for a new round of nuclear negotiations in Montreux, March 4, 2015.

U.S. Secretary of State John Kerry (right) walks to a meeting with Iranian Foreign Minister Mohammad Javad Zarif for a new round of nuclear negotiations, in Montreux, Switzerland, March 3, 2015.