The White House said Harris would attend the meeting in Lucerne on June 15. President Biden is scheduled to be at a campaign fundraiser in Los Angeles hosted by actors George Clooney and Julia Roberts.

“The Vice President will underscore the Biden-Harris Administration’s commitment to supporting Ukraine’s effort to secure a just and lasting peace, based on Ukraine’s sovereignty and territorial integrity” and the principles of the U.N. charter, said her communications director, Kirsten Allen. She said Harris will also “reaffirm support for the people of Ukraine as they defend themselves against ongoing Russian aggression.”

Biden’s national security adviser, Jake Sullivan, will join Harris as part of the U.S. delegation.

Zelensky has heavily boosted the summit and encouraged world leaders to attend, even as he’s accused Russia, with China’s help, of trying to undermine the meeting.

Miller writes for the Associated Press.