Warsaw sends troops to border, accusing Belarus of violating its airspace

Polish military says army helicopters crossed eastern flank, adding to tensions caused by proximity of Wagner fighters

Poland has rushed troops to its eastern border after accusing Belarus, Russia's closest ally, of violating its airspace with military helicopters.

The Belarusian military denied any such violation and accused Poland, a Nato member and one of Ukraine's most fervent backers in its conflict with Russia, of inventing the accusation to justify a buildup of its troops.