Matthew Forbes Pottinger is an American former journalist and U.S. Marine Corps officer who served as the United States deputy national security advisor from September 22, 2019 to January 7, 2021. Previously Asia senior director on the National Security Council since 2017, his tenure was unusual among senior aides serving under President Trump for its length, given an administration marked by high turnover. Pottinger worked to develop the Trump administration's policies towards China. Pottinger resigned in the afternoon of January 6, in response to the 2021 United States Capitol attack. He left the White House the following morning.