Ukraine has taken a step closer to winning approval for German-made modern battle tanks to confront invading Russian forces and has secured a pledge of more Patriot defence missiles as its allies appear ready to rally for the next phase of the war. Ukraine has relied primarily on Soviet-era T-72 tank variants. Germany's Leopard 2 tank, operated by armies in about 20 countries, is regarded as one of the West's best. The tank weighs more than 60 tons, has a 120mm smoothbore gun and can hit targets at a distance of up to five km. Ukraine says the tanks would...