At Tuesday's press conference in Poland, Boris Johnson was confronted by a tearful Ukrainian woman who had fled her country amid Vladimir Putin's invasion.
Daria Kaleniuk, a Ukrainian journalist, gave an impassioned plea for a 'no-fly zone' over Ukraine, which has been hit by a fierce airstrike from Russian troops since last week.
She told the prime minister, who appeared in Warsaw alongside the Polish prime minister Mateusz Morawieck, that it is "Ukrainian children who are there taking the hit".
