A horror show. A pile-on. However you want to describe it, the meeting between US President Donald Trump and President Volodymyr Zelensky in the Oval Office last night was a historic catastrophe: Ukraine and its most important ally in a public slanging match.

LONDON — In almost every way, British Prime Minister Keir Starmer will walk into the White House on Thursday as an alien in President Donald Trump’s MAGA universe: a former human rights lawyer, a onetime top prosecutor and, after vanquishing Conservatives in elections last summer, the United Kingdom’s most liberal leader in more than a decade.