Explainers

The president has previous when it comes to tweeting memes with unknown origins.
Fears are intensifying that Boris Johnson is prepared to evade scrutiny and take the UK out of the EU with no deal.
The 'inverted yield curve' explained in a way that won't make your head hurt.
"Q is you. And Q is me. Q is logic. Q is a plan to save the world."
The much-disputed region is, once again, the epicentre for potential conflict.
“I would be sending Jeremy Corbyn in a cab to Buckingham Palace to say we’re taking over."
The scheme was seen as a rite of passage for many young people – until the dawn of budget airlines.
The legislation is named after chef Claudia Lawrence, who vanished without trace a decade ago.
The embattled company was called “an embarrassment to UK corporate governance” after the chaotic way it announced its results on Friday.