World

AP Interview: Head of UN nuclear test ban organization urges Iran to ratify test ban treaty

FILE - In This Sept. 27, 2013 file photo CTBTO Executive Secretary Lassina Zerbo speaks during a news conference regarding the Comprehensive Nuclear-Test-Ban Treaty Organization Article XIV conference during the 68th session of the United Nations General Assembly at U.N. headquarters. The head of the UN’s nuclear test ban treaty organization challenged Iran on Tuesday to ratify the treaty as quickly as possible to prove that it is serious about not wanting to develop atomic arms. (AP Photo/Jason DeCrow)

FILE - In This Sept. 27, 2013 file photo CTBTO Executive Secretary Lassina Zerbo speaks during a news conference regarding the Comprehensive Nuclear-Test-Ban Treaty Organization Article XIV conference during the 68th session of the United Nations General Assembly at U.N. headquarters. The head of the UN’s nuclear test ban treaty organization challenged Iran on Tuesday to ratify the treaty as quickly as possible to prove that it is serious about not wanting to develop atomic arms. (AP Photo/Jason DeCrow)  (The Associated Press)

The head of the U.N.'s nuclear test ban treaty organization is challenging Iran to ratify the treaty as quickly as possible to prove that it is serious about not wanting to develop atomic arms.

Iran and six world powers are racing to meet a June 30 deadline for a deal that would limit Tehran's nuclear programs in exchange for the lifting of economic sanctions, with a new round of talks to start Wednesday.

Iranian ratification of the test ban treaty is not part of that agreement. But Lassina Zerbo told The Associated Press Tuesday that doing so would add weight to Tehran's insistence that it is not interested in such weapons.

Zerbo heads the U.N.'s Comprehensive Test Ban Treaty Organization.