This article is from Deutsche Welle:

Belarus has been disqualified for a second time from the Eurovision Song Contest after its entry failed to comply with the non-political nature of the competition. 

The country was allowed to submit a new entry two weeks ago, over concerns that their original entry by the band Galasy ZMesta had a political subtext. The second song has also been rejected by the European Broadcasting Union (EBU).

“It was concluded that the new submission was also in breach of the rules of the competition that ensure the Contest is not instrumentalized or brought into disrepute. As BTRC have failed to submit an eligible entry within the extended deadline, regrettably, Belarus will not be participating in the 65th Eurovision Song Contest in May,” said a statement by the Union. 

The article can be accessed through this link.