The NATO forces have beefed up security and put their troops on alert due to Russia-linked Wagner fighters' presence in Belarus.

The NATO forces have beefed up security and put their troops on alert due to Russia-linked Wagner fighters' presence in Belarus.

In a statement, a NATO official said the alliance is closely watching the situation along its eastern borders.

He said NATO is in close contact with the Polish authorities on this matter, and will take necessary steps to ensure that the whole territory of the alliance remains secure.