Nuclear disarmament

United Nations Security Council meeting on the Mideast attended by United States Secretary of State Michael Pompeo, Tuesday Aug. 20, 2019 at U.N. headquarters. (AP Photo/Bebeto Matthews)

FILE - In this Aug. 8, 2019, file photo, House Speaker Nancy Pelosi gives a news conference at the Air Force Base in Guatemala City. There’s an American leader whose words increasingly resonate abroad, who’s adored in foreign capitals and who sends a message just by her arrival. House Speaker Nancy Pelosi has emerged as an alternative ambassador in the Trump era. (AP Photo/Oliver de Ros, File)

In this Aug. 7, 2019, photo, President Donald Trump and first lady Melania Trump board Air Force One for a trip to Dayton, Ohio and El Paso, Texas, at Andrews Air Force Base, Md. As Trump prepares to leave Friday for his annual August holiday at his lush New Jersey golf club, the president will confront a storm of crises, at home and abroad, that could set the course for his upcoming re-election bid. (AP Photo/Evan Vucci)

In this Aug. 7, 2019, photo, President Donald Trump and first lady Melania Trump board Air Force One for a trip to Dayton, Ohio and El Paso, Texas, at Andrews Air Force Base, Md. As Trump prepares to leave Friday for his annual August holiday at his lush New Jersey golf club, the president will confront a storm of crises, at home and abroad, that could set the course for his upcoming re-election bid. (AP Photo/Evan Vucci)

This Thursday, July 25, 2019, photo provided on Friday, July 26, 2019, by the North Korean government shows a test of a missile launch in North Korea. A day after two North Korean missile launches rattled Asia, the nation announced Friday that its leader Kim Jong Un supervised a test of a new-type tactical guided weapon that was meant to be a "solemn warning" about South Korean weapons introduction and its rival's plans to hold military exercises with the United States. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)

This Monday, July 22, 2019 Maxar Technologies shows a close up of British-flagged oil tanker Stena Impero at the Iranian port city of Bandar Abbas. President Hassan Rouhani suggested on Wednesday, July 24, that Iran might release the U.K.-flagged ship if Britain takes similar steps to release an Iranian oil tanker seized by the British Royal Navy off Gibraltar earlier this month. His remarks could create an opening to reduce tensions as Boris Johnson becomes prime minister. (Satellite image ©2019 Maxar Technologies via AP)

The Iranian flag waves outside of the UN building that hosts the International Atomic Energy Agency, IAEA, office inside in Vienna, Austria, Wednesday, July 10, 2019. President Donald Trump’s “maximum pressure” campaign against Iran is at a crossroads. His administration is trying to decide whether to risk stoking international tensions even more by ending one of the last remaining components of the 2015 nuclear deal. (AP Photo/Ronald Zak)

A speedboat of the Iran's Revolutionary Guard moves around a British-flagged oil tanker Stena Impero, which was seized on Friday by the Guard, in the Iranian port of Bandar Abbas, Sunday, July 21, 2019. Iranian officials say the seizure of the British oil tanker was a justified response to Britain's role in impounding an Iranian supertanker two weeks earlier off the coast of Gibraltar, a British territory located on the southern tip of Spain. (Hasan Shirvani/Mizan News Agency via AP)

A woman walks past a mural in a sidewalk in downtown Tehran, Iran, Sunday, July 21, 2019. (AP Photo/Vahid salemi)

FILE - In this Nov. 22, 2018, file photo, International Atomic Energy Agency (IAEA) Director General Yukiya Amano of Japan addresses the media during a news conference after a meeting of the IAEA board of governors at the International Center in Vienna, Austria. The IAEA said Monday, July 22, 2019, it is announcing with regret the death of Amano. The Secretariat did not say how Amano, who was 72, died. (AP Photo/Ronald Zak)