From: CNN By Ivana Kottasová

Valentyn Ogirenko/Reuters
Bankir and his men have been trying to fight off Russian attacks along the Ukrainian front lines for more than two years. But it’s only now that they are finally able tostrike where it hurts: Inside Russia’s own territory.
The newly granted permission by the United States and other allies to use Western weapons to strike inside Russia has had a huge impact, Bankir said. “We have destroyed targets inside Russia, which allowed for several successful counteroffensives. The Russian military can no longer feel impunity and security,” the senior officer in Ukraine’s Security Service (SBU) told CNN. For security reasons, he asked to be identified by his call sign only.
After many months on the back foot because of ammunition and manpower shortages, Kyivis finally able to take full advantage of Western military aid that started to flow into the country last month, after months of delays.