What the Trump presidency means for America's old European allies.
From a US president who is turning the world upside down – with a relish for dismantling global agreements – the message is clear: it’s America first. But where does that leave old European allies? Few expect the transatlantic relationship to go back to where it was before Trump. Europe, says Angela Merkel, now has to shape its own destiny. James Naughtie explores the uncertain future for America's friends.