Due to months-long delays in approving aid to Ukraine in the US Congress, Kyiv lost part of its territory in the east of the country, including Avdiivka, states US National Security Advisor Jake Sullivan. Due to the delay in American aid, Ukraine was forced to economize on ammunition, resulting in the loss of territories, he said. “And while today’s announcement is very good news for Ukraine, they are still under serious pressure on the battlefield, and it is certainly possible that Russia could make additional tactical gains in the coming weeks,” Sullivan said. “The fact is that it’s going to…