In remarks to the Conference on Disarmament in Geneva, a senior U.S. diplomat underscored that "the U.S. remains gravely concerned by Iran's missile program", arguing that "Iran's ballistic missile activities and space launch vehicle development efforts are in defiance of UN Security Council Resolution 2231". The official went on to assert that "the U.S. will use all available authorities, including sanctions, to disrupt Iran's procurement networks and brokers". She further indicated that "the U.S. has also had longstanding concerns that Iran maintains a chemical weapons program that it has failed to declare to the OPCW", adding that "the U.S. is gravely concerned that Iran is pursuing pharmaceutical-based agents for offensive purposes".