Russia launched large-scale drone and missile strikes on Ukraine's capital and other parts of the country early on Friday, local officials said. At least four people were killed in Kyiv and at least 20 have been injured, the city's mayor Vitaliy Klitschko said.

The Russian attacks come after President Donald Trump likened the two sides to children on a playground who needed “to fight for a while.”

Russia hit Ukraine with a barrage of missiles and drones days after Kyiv's planned drone attack in Russian territory. The attack comes a day after President Trump voiced frustration on the stalled peace talks between the countries.