ALSO SEE: Russian Missile and Drone Attack on Ukraine’s Capital
Kills at Least 12 Ahead of NATO Summit

Ballistic missiles were fired into the capital of Ukraine as Russia launched its second major attack in less than a week. At least 12 people were killed, officials said.

Explosions rocked the Ukrainian capital of Kyiv early on Monday, the eve of a NATO summit, as Russia mounted its second major attack on the city in days.

President Volodymyr Zelensky of Ukraine, who is expected to attend the NATO summit, in Turkey, said in a social media post that 12 people had been killed in the attack and 64 others wounded, including two children.

The war in Ukraine will be front and foremost at the NATO meeting on Tuesday and Wednesday as the conflict has reached deep into Russian and Ukrainian cities.

President Trump, who in recent months had turned his attention from Ukraine to the war in Iran, spoke with both Mr. Zelensky and President Vladimir V. Putin of Russia over this weekend. Mr. Zelensky said that he expected the conversations to continue at the summit.

As peace talks have been set aside, both Russia and Ukraine in recent weeks intensified strikes on cities in each other’s territory. Aiming to bring the war home to the Russian public, Ukraine has mounted a new and wide-ranging strategy of drone strikes into Russia, targeting oil refineries as well as military production facilities. The attacks on the refineries have caused fuel shortages across Russia.

Moscow’s efforts to advance on the battlefield in Ukraine have largely stalled. But, in attacks that overwhelm Ukraine’s air defenses, the Russian military regularly launches barrages of missiles and drones at large cities, hitting not only factories and warehouses but also apartment buildings.