The United Kingdom and the European Union (EU) summoned their respective Russian ambassadors after the Kremlin military pounded Kyiv with a massive drone and missile attack overnight Thursday, killing at least 18 people and damaging both the EU’s mission building and British Council offices in Ukraine’s capital.

Russia’s attacks destroyed a five-story building and severely damaged others in Kyiv as rescuers worked to clear the rubble in order to find residents. Among the casualties were at least three children, with the youngest girls being 3 years old, according to Kyiv Mayor Vitali Klitschko, who added that Friday will be a day of mourning for the victims.

The strikes represent the largest attack on Kyiv since President Trump’s summit with Russian President Vladimir Putin in Alaska ear

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