Germany’s Merz says Britain and France may need to “share” their nuclear weapons as America can’t be relied on to defend NATO. Europe's politicians are openly discussing how they could tackle the threat of nuclear attack without American help, in a dramatic sign of the deep crisis engulfing the transatlantic alliance under Donald Trump. In what would be a huge shift in position, the runaway favorite to be Germany’s next leader said the continent must find new ways to defend itself without the U.S. military underpinning its nuclear protection through NATO. Friedrich Merz, whom polls suggest is on course to...