Belarus-EU refugee standoff is the latest example of the UN refugee convention under strain.
Belarus and the European Union are raising their stakes in a standoff over refugees and migrants at the Belarusian-Polish border.
The EU is imposing more sanctions on entities in Belarus, while Belarusian President Alexander Lukashenko is threatening to cut gas supplies to Europe.
Poland has asked NATO to take concrete steps to resolve the crisis.
Caught in the middle are thousands of refugees.