Tusk: Russia Seeks to Divide Poland and Ukraine

Poland's leader, Donald Tusk, believes Russia wants to cause problems between Poland and Ukraine.

This comes after someone waved a Ukrainian flag at a concert in Poland, which upset some people due to past disagreements.

Tusk is worried because of a meeting between U.S. President Trump and Russian President Putin.

European leaders are also talking with Trump before this meeting.

Tusk thinks Russia wants to create issues between Poland and Ukraine before the meeting.

At the concert, some people were arrested for different reasons, and some are being sent back home.