Helmut Sonnenfeldt

Sonnenfeldt died on Sunday, November 18, 2012 after a long illness, leaving behind his wife and their three children. The cause was complications of Alzheimer’s disease. As a veteran, he was interred at Arlington National Cemetery. His brother was Richard Sonnenfeldt, an American engineer also noted for being the U.S. prosecution team's chief interpreter in 1945 at the Nuremberg Trial after World War II.

After leaving government service, he was a visiting scholar at the Johns Hopkins School of Advanced International Studies. Since 1978, he had been a Guest Scholar at the Brookings Institution in Washington, D.C.

On the 7th January 1971 Sonnenfeldt, in a memo regarding US / Soviet relations complained to Henry Kissinger that he had been excluded from Kissinger's confidence. "My undoubted personal disappointment that you have almost completely excluded me from participation in or even knowledge of the more sensitive aspects of our dealings with the USSR."

Within days of the 1968 Nixon election, Henry Kissinger picked him to serve on the National Security Council staff. He was a senior staff member of the National Security Council from 1969–1974. In 1974, he was appointed Counselor of the U.S. Department of State, where he served from 1974, continuing after Nixon's resignation for the duration of the Ford administration.

In 1953, he married Marjorie Hecht. They had three children: Babette Hecht, Walter Herman and Stewart Hecht.

Sonnenfeldt entered service in the U.S. Department of State in 1952 as a member of the staff of the Office of Research on the Soviet Union and Eastern Europe, and served as the Director of that Office from 1963–1969.

After military service, he attended Johns Hopkins University (BA 1950, MA 1951, Johns Hopkins School of Advanced International Studies).

Helmut Sonnenfeldt (September 13, 1926 – November 18, 2012), also known as Hal Sonnenfeldt, was an American foreign policy expert. He was known as Kissinger’s Kissinger for his philosophical affinity with and influence on Henry A. Kissinger, the architect of American foreign policy in the Nixon and Ford administrations.

Sonnenfeldt was born in 1926 in Berlin, Germany, to Drs. Walther and Gertrud (Liebenthal) Sonnenfeldt. His family was Jewish. He spent his childhood in Gardelegen, Germany, where his parents had a family medical practice. In 1938, Sonnenfeldt was sent to Anna Essinger's Bunce Court School in England, as was his brother, Richard Sonnenfeldt. Helmut Sonnenfeldt remained in England until 1944, when he immigrated to the United States and rejoined his parents, who had resettled in Baltimore, Maryland. He entered the U.S. Army in 1944, became a naturalized American citizen and served in both the Philippines and in the U.S. occupation forces in Germany.