Henry Kissinger, who served as secretary of state under two Republican presidents and helped bring an end to the Vietnam War, died Wednesday. He was 100.

Kissinger died at his home in Connecticut, according to his consulting firm, Kissinger Associates.

Born in Germany in 1923, Kissinger’s family fled the Nazis for the United States in 1938.

After a stint in the U.S. Army, Kissinger earned his bachelor’s, master’s and Ph.D. degrees at Harvard University.

In 1969, President Nixon appointed Kissinger national security advisor.

Nixon later made Kissinger the country’s top diplomat, tapping him for secretary of state.

Kissinger also served in that post under President Ford.

During his tenure in government, Kissinger assisted Nixon in opening China up to the West, negotiated an end to the Yom Kippur War and helped end America’s involvement in the Vietnam War.

His legacy was complicated, with critics accusing him of engaging in war crimes by being behind the bombings in Cambodia that killed an estimated 100,000 civilians.

Kissinger’s role in government ended in 1977.

In May, the former secretary of state celebrated his 100th birthday and remained active until his death, including how artificial intelligence will impact the world.

He is survived by his wife of nearly 50 years, Nancy Maginnes Kissinger, two children by his first marriage, David and Elizabeth, and five grandchildren.