It's been four years since Russia’s full-scale invasion of Ukraine as the country keeps fighting and Europe shows support but struggles to stay united. On Tuesday, more than a dozen

In the war's first year, Ukraine forced back the Russian offensive at the gates of Kyiv and reclaimed swathes of occupied land. But a Ukrainian counteroffensive failed the following year, and since then Moscow has made slow but relentless gains in costly battles along a 1,200-km (750-mile) front.