Ukrainian parents race against time to save children

As the conflict between Russia and Ukraine escalates, tens of thousands of Ukrainians are thronging at the Polish border, seeking refuge.  Since last Thursday, Polish Deputy Interior Minister Maciej Wasik said that more than 350,000 Ukrainian refugees have arrived in Poland.  The United Nations Refugee Agency (UNHCR) said that more than half a million people have already fled to Poland, Romania, Hungary, and other neighboring countries.  Many Ukrainian parents are racing against time to get their children out of danger.