A cause of death was not disclosed.

Ultimately, this lucrative side hustle is responsible for Rumsfeld’s surprising net worth.

According toCelebrity Net Worth, Rumsfeld was worth an approximated $200 million at the time of his death.

Former secretary of defense Donald Rumsfeld

When he left the White House in 2006, Rumsfeld estimated his net worth to be $127 million.

Former Secretary of Defense Donald Rumsfeld