Iran's president has said he will stick to the agreement, if other countries meet their obligations.

Meanwhile, his foreign minister has embarked on a diplomatic tour, in an attempt to salvage the deal. 

Mohammad Javad Zarif has held talks in China as he began a diplomatic tour with the remaining signatories of a multinational nuclear deal following the recent US withdrawal from the landmark 2015 pact.

Al Jazeera's Zein Basravi reports from Tehran.