How Belarus engineered a migrant crisis

A new migrant crisis is building on the European Union's eastern frontier. At the border with Poland, thousands of migrants and asylum seekers are camped out in forests and woodlands in Belarus trying to enter. So how did they get there? And how does this impasse resolve? Today on The Signal, how Belarus engineered a migrant crisis, and why. Featured: Sara Cincurova, independent journalist, Bratislava, Slovakia