Mike Pompeo, U.S. secretary of state, speaks to members of the media following a briefing on the murder of U.S-based columnist Jamal Khashoggi on Capitol Hill in Washington, D.C., U.S., on Wednesday, Nov. 28, 2018. The briefing is happening ahead of a vote on a measure to invoke the War Powers Resolution to end U.S. support for the Saudi-led military campaign in Yemen. Photographer: Al Drago/Bloomberg
US Secretary of State Mike Pompeo warned of regional escalation after Iran conducted a missile test on December 1, 2018. Bloomberg

Pompeo warns of escalation risk as Iran conducts missile test