Russia has turned to a terrifying new tactic in its assaults on Ukraine, launching nonstop waves of armed drones in recent days into busy areas of the capital, Kyiv. The relentless attacks have left residents exhausted and on edge as air raid sirens bellow nearly constantly.

With Moscow firing drone after drone into Kyiv, including many powered with jet engines that help them fly so fast they are difficult to intercept, many in the capital have begun to accept that they may be facing a new phase of the war.

This period threatens to be more dangerous and unpredictable for Kyiv than any since the first weeks of Russia’s 2022 invasion. It comes as the city already faces increased danger from powerful Russian ballistic missiles as Moscow capitalizes on depleted Ukrainian air defenses.

While Russia has long conducted deadly drone attacks on Kyiv, the weapons have often come in overnight barrages and have not tormented the city throughout the day. Residents long ago grew used to the menacing hum of slower-moving drones but now face the danger of the jet-powered models, which crash into a target before anyone nearby has a chance to run.

The waves of drones have arrived in Kyiv just as residents are trying to enjoy the waning warm days of summer, craving some normalcy. On Saturday morning in the bustling Obolon neighborhood, dozens of customers were seated on the popular See You Cafe’s shaded terrace for brunch even as air raid sirens blared.

Inside the cafe, the owner, Artem Rudychenko, 40, and the manager, Ihor Kuzmich, 35, chatted by the dessert stand. A barista made two lattes and a waitress picked them up to carry outside.