U.S. presidential adviser visits Ukraine and emphasizes commitment to military assistance.
Sullivan is expected to meet with President Zelenskiy and convey his policy of continuing to support Ukraine as it faces Russia's military invasion. Meanwhile, Secretary of the Presidential Administration Yermak revealed that Ukraine has already concluded bilateral security agreements with nearly 40 countries, and is also preparing to sign them with the U.S., he said. Sullivan is in charge of national security policy at the US White House.