Hundreds of volunteers from all around the world are signing up to defend Ukraine from a devastating Russian invasion. Responding to the plea issued by Ukrainian President Volodymyr Zelensky on Sunday, these volunteers aim to help the Ukrainian forces defend Kyiv and stop the advance of Russian forces invading the country. Lithuanian volunteers have joined the fight on the side of Ukraine. 🇱🇹🇺🇦 pic.twitter.com/2oBpW6U4N3 — Visegrád 24 (@visegrad24) Most of the volunteers heading to Ukraine hail from other post-Soviet states, but dozens of others are enlisting from other parts of Europe and the…