Russia’s invasion of Ukraine four years ago launched Europe’s biggest conflict since World War II. It has caused immense suffering for civilians and harrowing ordeals for soldiers while rewriting the post-Cold War security order. Russia’s invasion of Ukraine four years ago launched Europe’s biggest conflict since World War II, causing immense suffering for civilians and harrowing ordeals for soldiers while rewriting the post-Cold War security order. The fighting enters its fi... [4265 chars]