VIENNA - U.N. nuclear agency chief Yukiya Amano will visit Iran on Sunday in an effort to advance cooperation in the agency’s long-running dispute with Iran over its nuclear activities, the IAEA said on Friday.

The visit comes ahead of an Aug. 25 deadline for Iran to provide information relevant to the International Atomic Energy Agency’s investigation into suspicions that Iran may have researched how to build a nuclear bomb, an accusation that Iran denies. (Reuters)