The US said Russia and Ukraine agreed to a ceasefire in the Black Sea, even as the Kremlin said its involvement would depend on a series of preconditions, including sanctions relief.

In separate statements, the White House said Tuesday that three days of technical-level talks in Saudi Arabia with teams from Russia and Ukraine had yielded agreements “to ensure safe navigation” in the Black Sea. The sides had also agreed to prevent the use of commercial shipping for military purposes, it said.