Washington: US President Barack Obama, in an interview has said that the public will better appreciate the Iran nuclear deal after it takes effect.

"When this agreement is implemented and we've seen centrifuges coming out of facilities like Fordow and Natanz, and we've got inspectors on the ground and it becomes clear that Iran in fact is abiding by this agreement, then attitudes will change," Xinhua cited Obama as saying in an interview with National Public Radio (NPR) on Monday.