Secretary of State John Kerry is set to introduce billionaire investor George Soros at a State Department forum Tuesday, the Washington Free Beacon reported.

Soros Fund Management Chairman George Soros speaks during a panel discussion at the Nicolas Berggruen Conference in Berlin, Germany, Oct. 30, 2012. (AP Photo/Thomas Peter, Pool)

Kerry will make the introduction at 1:30 p.m. at the event sponsored by the George C. Marshall Center, a German-based security and defense institute operated by both the U.S. Department of Defense and German Defense Ministry.

A State Department spokeswoman confirmed to TheBlaze that Kerry will introduce Soros, but stressed that the forum is an in-house event for department employees only, not a public or press event.

Soros, who has an estimated net worth of $20 billion, wrote in his 2006 book, “The Age of Fallibility: The Consequences of the War on Terror,” that “the main obstacle to a stable and just world order is the United States.” He has been the key financier of various liberal organizations, including donating millions to groups that tried to get John Kerry elected president in 2004 and $1 million to the pro-Obama super PAC Priorities USA in 2012.

Soros’ Open Society Foundation has funded groups that support divesting from Israel and organizations such as the Palestinian Center for Human Rights, a Gaza-based group that has accused Israel of being an “apartheid state.” Kerry was sharply criticized for using the term “apartheid” in reference to Israel last month.

State Department spokeswoman Marie Harf told the Free Beacon that criticism sof Soros’ appearance are “wholly ridiculous and have no basis in fact whatsoever.”

“This is a regular secretary’s open forum event intended to inform and educate department employees,” Harf said in an email. “George Soros was invited to discuss his views on support of civil society.”