A week after Michael Flynn was forced out as national security advisor after lying about discussing sanctions with the Russians, President Donald Trump named Lt. Gen. H.R. McMaster as Flynn's replacement Monday, reported news sources.

According to McMaster's Hoover Institution biography, where he is a visiting fellow, he assumed duties as the director, Army Capabilities Integration Center and Deputy Commanding General, U.S. Army Training and Doctrine Command in 2014, served as commander, Combined Joint Inter-Agency Task Force Shafafiyat (Transparency) in Kabul, Afghanistan, as special assistant to the commander, Mulitnational Force-Iraq from in 2007 and 2008, director, Commander's Advisory Group at the U.S. Central Command in 2003 and 2004, and squadron executive officer and regimental operations officer in the 11th Armored Calvary Regiment from 1997 to 1999. 

McMaster has written extensively on historical and national securities topics and penned Dereliction of Duty: Lyndon Johnson, Robert McNamara, the Joint Chiefs of Staff, and the Lies That Led to Vietnam nearly 20 years ago.

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