The White House has officially confirmed that Ukrainian military forces have the right to use American weapons on the territory of Russia near both the Kharkiv and Sumy regions of Ukraine, states Michael Carpenter, Senior Director for European Affairs at the US National Security Council. “We have stated quite clearly that this permission to use American weapons allows Ukrainians to fire in response to Russian positions directly across the border in the Kharkiv and Sumy regions,” a US administration official said during a telephone briefing. Michael Carpenter added that this way, the Russian Fe…