BERLIN (Reuters) – Germany must do everything in its power to help Ukraine win the war against Russia but without endangering its own security and NATO’s defence capability, Finance Minister Christian Lindner said on Saturday. “We must do everything in our power to help Ukraine win, but the limit of the ethical responsibility is endangering our own security and endangering the defence capability of NATO territory,” Lindner said in a party conference speech in Berlin. “But what is possible … must be undertaken pragmatically and quickly, together with our European partners,” he said. Lindner s…