The deal was limited, and it was not clear when or how it would start. The Kremlin also demanded some Western sanctions be lifted first.

The U.S. said it would help Russia boost agricultural exports and restore its access to payments systems, after the Kremlin demanded the easing of Western sanctions in return for a cease-fire in the Black Sea.

Russia said on Tuesday the U.S. had agreed to help it lift restrictions on food, fertilizer and shipping companies in exchange for agreeing to a maritime security deal in the Black Sea.