Ukrainian drones hit an ammo depot at a Russian airbase and a weapons factory over the weekend.
These marked Ukraine's latest deep strikes targeting a key military facility inside Russia.
US officials and war analysts have said this campaign will complicate Russian operations in Ukraine.
The strike operations demonstrated Kyiv's long reach as it targets key military facilities inside Russia.
Ukraine said it also produces guided glide bombs, the highly destructive weapons Russia has used to wreak havoc on Ukrainian troop positions and civilians.
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