Germany’s defence minister warned that European countries and the NATO alliance must prepare for a decades-long conflict with Russia, in a speech at the Munich Security Conference on Saturday. Efforts to include Russia in a broader European security architecture after the Cold War failed, Boris Pistorius told the audience in Munich. “All these attempts ran counter to the Kremlin’s strategy of reinstalling its dominance in Eastern and Central Europe.” Western allies will stand firmly behind Ukraine “no matter how long [Russian President Vladimir] Putin continues this illegal and senseless war a…