Western officials fear the number of refugees fleeing Ukraine could hit 4 million as Russia continues its brutal onslaught.
The UN refugee agency briefed Western countries on Wednesday that there were now an estimated 2.2 million refugees from the conflict - and the number could rise to 4 million over the days to come.
Officials say the Russian invasion has sparked almost "unprecedented" movements of people across Europe, triggering the greatest refugee crisis since the Second World War.
