Ukraine said the attack hit a Danube River port infrastructure and injured two people. Meanwhile, Russia has been recruiting fighters from neighboring countries, according to British intelligence.
Ukraine's air force said on Sunday that it destroyed 22 out of 25 drones in a Russian attack on the southwestern Ukrainian region of Odesa.
The attack injured at least two people and hit "civilian infrastructure" at the Danube River port, Ukrainian officials said.
The attack was reported shortly after Ukrainian President Volodymr Zelenskyy said that two more ships had passed through a temporary "grain corridor" in the Black Sea.
Meanwhile, a British intelligence report said Moscow was trying to recruit citizens from neighboring countries and Central Asian migrants for its war, in an apparent bid to avoid further unpopular domestic mobilization before next year's elections.
