The below is attributable to U.S. Mission to the United Nations Spokesperson Nate Evans:

Ambassador Linda Thomas-Greenfield, U.S. Representative to the United Nations, spoke by phone today with Ukrainian Foreign Minister Dmytro Kuleba. Ambassador Thomas-Greenfield and Foreign Minister Kuleba discussed the importance of the Black Sea Grain Initiative, which has been critical in ensuring grain and food supplies get to those in need and stabilize global markets in the face of Russian obstruction. The two discussed shared priorities at the UN and Ambassador Thomas-Greenfield affirmed the U.S. commitment to stand with Ukraine.

Original source can be found here.