What was the UPA and why is it dividing Ukraine and Poland?

Описание: Ukraine has honored the UPA as heroes, angering Poland, one of its closest allies against Russia. But who were they?

#dwhistory
#dwhistorymatters

For more visit: https://www.dw.com/en/culture/s-1441
Please follow DW's netiquette: https://p.dw.com/p/MF1G