Trapped migrants and angry officials: What you need to know about the Poland-Belarus border crisis

Hundreds, possibly thousands, of migrants are stranded in the cold on the border between Belarus and Poland, caught up in a geopolitical standoff between the two Eastern European nations.

The European Union, like Poland and the U.S. State Department, has accused Belarus of sending migrants to the border to pressure its neighbors, a claim the country denies. Meanwhile, aid workers warn that vulnerable refugees are stuck in the frigid forests between the two countries.