U.S. President Joe Biden will announce a new aid package for Ukraine later on Wednesday, the White House said.

"President Biden will speak with President Zelenskyy shortly, if not already. And will announce a significant new security assistance package for Ukraine today," White House Press Secretary Karine Jean-Pierre said at a briefing.

She also said the leaders will discuss the work of the Ukraine Contact Group during the call, which will meet in November to discuss Kyiv's military needs.