Russia's invasion of Ukraine has forced more than a million people to flee their homeland in just a week, an exodus so swift it almost matches the number of people who sought refuge in Europe in a whole year during the 2015 migration crisis.
Seven years ago — again after Russian bombardments — hundreds of thousands of Syrians fled their strife-torn country. Together with people escaping fighting in Afghanistan, Iraq and elsewhere, they headed west, thousands dying at sea trying to reach a continent where many didn't want them.
