Robert C. O'Brien

Robert Charles O'Brien Jr. (born June 18, 1966) is an American attorney who served as the twenty-seventh United States national security advisor from 2019 to 2021. He was the fourth and final person to hold the position during the presidency of Donald Trump. Early life and education O'Brien was born in Los Angeles and raised in Santa Rosa, California, where he attended Cardinal Newman High School. He won a Rotary scholarship to study at the University of the Free State in South Africa in 1987. He received a Bachelor of Arts in political science from the University of California, Los Angeles in 1988, and a Juris Doctor from the UC Berkeley School of Law in 1991. Early career From 1996 to 1998, O'Brien was a legal officer with the United Nations Compensation Commission in Geneva, Switzerland. O'Brien was a major in the Judge Advocate General's Corps of the United States Army Reserve. Private practice O'Brien was the California managing partner of the law firm Arent Fox LLP for seven years.