People hold placards and Ukrainian national flags in Trafalgar Square, during a “London stands with Ukraine” protest march and vigil, in central London on March 26, 2022. The month of war has displaced 4.3 million children – more than half of Ukraine's estimated child population of 7.5 million, according to the UN children's agency Unicef. More than 10 million Ukrainians have fled their homes, as cities have faced sustained Russian bombardment from land, sea and air. (Photo by London News Pictures)
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