The NATO alliance has in recent years survived existential challenges - ranging from the war in Ukraine to multiple bouts of pressure and insults from US President Donald Trump, who has questioned its core mission and threatened to seize Greenland. But it is the US-Israeli war with Iran, thousands of miles from Europe, that has nearly broken the 76-year-old bloc and threatens to leave it in its weakest state since its creation, say analysts and diplomats. Trump, enraged that European countries h...