More than a half-dozen countries have provided Ukraine with anti-tank missiles that have become an important component of fighting off a complete Russian takeover.

Russian forces entered Ukraine last Thursday, and they have largely “stalled” in their efforts to capture the capital city of Kyiv, Pentagon spokesman John Kirby told reporters Wednesday. However, they’ve had success in Kherson, a southeastern city located in close proximity to Crimea, where Russian forces have been stationed since 2014.