Russia said on Sunday it had struck three military training centers in northern and western Ukraine, including one near the Polish border, days before a NATO summit of which Warsaw is a member.

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These bombings were carried out with “high-precision weapons of the Russian Aerospace Forces and Kalibr (cruise) missiles,” the Russian Defense Ministry said in a statement. Among the targeted targets is a military training center for Ukrainian forces in the Starytchi district, in the Lviv region, about thirty kilometers from the Polish border.