US Secretary of State John Kerry said Thursday the implementation of the Iran nuclear deal may be only "days away," with Tehran on track to meet its pledge to put a bomb beyond its reach.

US Secretary of State John Kerry said Thursday the implementation of the Iran nuclear deal may be only "days away," with Tehran on track to meet its pledge to put a bomb beyond its reach.

Kerry told reporters he had spoken to Foreign Minister Mohammad Javad Zarif, who promised Iran would live up to its promises, and said the United States would be ready to begin lifting its nuclear-related sanctions against Tehran.