A display featuring missiles and a portrait of Iranian Ayatollah Ali Khamenei is seen at Baharestan Square in Tehran, Sept. 27, 2017. Photo: Nazanin Tabatabaee Yazdi / TIMA via Reuters.

A senior US arms control official said on Tuesday that Iran‘s missile program is destabilizing the Middle East and increasing the risk of a “regional arms race.”

Yleem Poblete, assistant secretary of state for arms control, verification and compliance, told the UN-sponsored Conference on Disarmament that Washington would aggressively counter Tehran’s “regional proliferation of ballistic missiles and its unlawful arms transfers.”

She urged “all responsible countries” to enforce United Nations Security Council resolutions restricting the transfer of missile-related technologies to Iran.