The war in Ukraine will soon enter its sixth month. For all the talk of Russia crossing the West’s red lines with its conduct in the war and of the West crossing Russia’s red lines with its military assistance to Ukraine, the true red lines have not yet been breached. At the outset of the war, both sides hashed out a set of invisible rules—unspoken but nonetheless real. They include Russia’s acceptance of allied heavy-weapons deliveries and intelligence support for Ukraine… – Foreign Affairs Photo: Sputnik