Mark Brzezinski is the son of Polish-born former National Security Advisor Zbigniew Brzezinski and the grandson of Polish diplomat Tadeusz Brzeziński. His mother, Emilie Benes Brzezinski, is the grandniece of former Czechoslovak president Edvard Beneš. His sister is Mika Brzezinski, co-host of the morning talk show Morning Joe, and his brother is military expert Ian Brzezinski. He is also first cousin of author Matthew Brzezinski.

Brzezinski was a corporate and securities associate at Hogan & Hartson LLP in Washington, D.C. from 1996-1999. From 1999-2001, Brzezinski served in the Clinton administration as a director of Russian/Eurasian affairs and director of Southeast European affairs of the National Security Council at the White House. In that capacity, he was White House coordinator for U.S. democracy and rule of law assistance programs for the region.

Brzezinski was a foreign policy advisor to the presidential campaign of Barack Obama,[1] and was later appointed Ambassador to Sweden by Obama.[2

Ian Brzezinski graduated from Williams College in 1986. He was a Support Analyst/Information Assistant at the National Security Council in 1986–1987.

He served as a member of the Policy Planning Staff in the Department of Defense in 1991–1993, and was also a consultant to the Center for Naval Analysis in 1991–1992.

In 1993–1994, Brzezinski became a volunteer advisor to the government of Ukraine, where he assisted Ukraine's National Security Council, Foreign Ministry, Defense Ministry and Parliament.

He returned to the United States in 1995, and became Legislative Assistant for National Security Affairs to Senator William V. Roth. In 2000, he became a Senior Professional Staff Member for the U.S. Senate Committee on Foreign Relations.[1]

He served as Deputy Assistant Secretary of Defense for Europe and NATO Policy in 2001–2005.

After leaving the Defense Department, Brzezinski became a Principal at the consulting firm Booz Allen Hamilton, Inc., providing policy and technical advice to U.S. combatant commands and foreign clients. He left Booz Allen Hamilton after five years, and now heads the Brzezinski Group, which provides similar services: " … a strategic advisory firm serving U.S. and international commercial clients in the financial, energy, and defense sectors. The Brzezinski Group assists them navigate geopolitical developments, develop and execute market entry and opportunity capture strategies, and manage relationships with government entities."[2]

He is also a member of the Strategic Advisors Group at the Atlantic Council; in 2010 he was named a Senior Fellow in the Council's Brent Scowcroft Center on International Security.[3]

Brzezinski is a frequent contributor to the American press on foreign policy issues.[4]

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