The sides exchanged opinions on issues of arms nonproliferation VIENNA, February 27. /TASS/. Director General of the International Atomic Energy Agency (IAEA) Rafael Grossi said he had discussed the Iranian dossier with Christopher Yeaw, the assistant secretary for the Bureau of Arms Control and Nonproliferation at the US Department of State, at a meeting on Friday. "Welcomed the State Department’s Assistant Secretary Yeaw to the IAEA today for a timely exchange on current non-proliferation