Ukraine is running out of artillery shells and NATO cannot deliver. The Washington Post admits that Ukraine faces a critical ammunition shortage which has no solution. In desperation, Ukrainians silence their guns, collect dangerous unexploded ordinance, and try to make improvised artillery shells. This is ultimately an artillery war. See this. Russia has locked Ukraine into static positions where the Ukrainians are being hammered by Russian artillery. More than 90% of casualties are inflicted by artillery. Ukraine losing the artillery due to lack of ammunition and guns simply means Ukrainians are dead and lose the war. That will in even the best case happen to Ukraine late-Summer 2023.