H r, mc master is a retired united states army lieutenant general who served ast y six national security adviser of the united States. Heis a historian of war and author of two books, dereliction of duty, johnson macnamera, the joint chiefs of staff and the lies that led to vianam. General mc master is currently a fellow at the hoover institution and lecturer and management at stamford's graduate school of business. And if you like our show, please give us your undivided attention by clicking here.