KYIV, Ukraine (AP) — Russia unleashed waves of missiles and drones at Ukraine early Monday, killing at least 22 people in attacks that exposed widening gaps in the country's air defenses more than four years into Moscow's full-scale invasion, authorities said.

All of the ballistic missiles launched by Russia struck their targets, underscoring Kyiv's need for more U.S.-made Patriot interceptor missiles — a point Ukrainian President Volodymyr Zelenskyy will likely reiterate at a NATO summit in Ankara, Turkey, this week.

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Fifteen people were killed in the capital of Kyiv, which was Russia's main target, and 56 were injured, according to administrative head Tymur Tkachenko. Another seven people were killed in the wider Kyiv region and 29 were injured, according to Ukraine's emergency service.

Emergency workers searched for survivors in the rubble of residential high-rises in two locations that suffered direct hits.