Ukraine and Russia attacked targets on each other's territory on Thursday after brief direct talks between the two sides failed to make any progress on steps to end nearly three-and-a-half years of war.

A Russian overnight air attack wounded eight residents of an apartment building in Kyiv, including a three-year-old child, authorities said on Monday, while the Ukrainian air force said a town hosting a key air base had been attacked.

NATO aircraft were scrambled Sunday night to respond to a Russian attack on Ukraine, the Polish military said Monday.