The landmark nuclear agreement between Iran and world powers remains "fragile" in part because it has become a focus of dispute in the U.S. presidential election, the head of the United Nations agency that polices the deal said.
"Small technical mistakes, small failures in implementation can become big political issues that could have a large negative influence on the agreement," International Atomic Energy Agency chief Yukiya Amano told the dpa news agency in an interview published on October 7.
Amano said that Iran so far has complied with the agreement by limiting its stockpile of enriched uranium and the number of centrifuges, machines that enrich uranium, all in exchange for the lifting of Western economic sanctions in January.
While U.S. Democratic presidential candidate Hillary Clinton supports the deal, her Republican opponent Donald Trump has strongly criticized it and vowed to tear it up if elected.
The unanimous U.S. Republican opposition to the deal has fueled similar opposition from conservative forces in Iran.
"There is little trust" between the Washington and Tehran, Amano noted.