UK sould be flying spare fighters to Karelia until it falls, once it falls, kill it without amphibious (from finland), this way you have the option of retreating. I agree, cooperate with Russia to destroy anything that touches the Baltic Sea and then when your ready to land, hit Germany(unless Western Europe is weak). I see many players who have habits of evacuating Germany each turn, then filling it up with new units. If they do this then you may be killing a force composed of mostly fighters, bombers, and tanks. US should definitely help take Western Europe, and/or Southern Europe if it is weak. Russia should build a horde of infantry and try to keep a fighter or two, then if Germany lets up-SLAM infantry rush into Easter Europe (and Ukraine, of course)