WARSAW, Aug 3 (Reuters) - Fighters from Russia's private Wagner mercenary force are being moved close to NATO's eastern flank to destabilise the military alliance, Poland's prime minister said on Thursday. Wagner soldiers have begun training with the Belarus national army, prompting Poland to start moving more than 1,000 troops closer to the border. "We need to be aware that the number of provocations will rise," Mateusz Morawiecki said after meeting Lithuanian President Gitanas Nauseda in eastern Poland. "The Wagner group is extremely dangerous and they are being moved to the eastern flank to destabilize it." Nauseda said the number of Wagner fighters in Belarus could be higher than 4,000.

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Persons: Wagner, Mateusz Morawiecki, Gitanas Nauseda, Nauseda, Vladimir Putin, Pawel Florkiewicz, Anna Wlodarczak, Andrew Cawthorne Organizations: WARSAW, Belarus national, NATO, Thomson Locations: Poland, Belarus, Russian, Kaliningrad, Baltic, Lithuania, Latvia, Ukraine