Explainers

Who is to blame for three million OAPs missing out on a free TV licence?
Schools have been closed, flights cancelled, and residents urged to stay inside as the city becomes a "gas chamber".
It's been a busy morning for the second referendum crowd.
Will the prime minister get his snap general election? Or will he have to busy himself with the cabinet secret Santa ballot instead?
How everything – from holidays, food shopping and citizens’ rights – could change if MPs back the PM’s deal with the EU.
Protests are planned across the UK over the bank holiday weekend and into September, with thousands expected to gather in major cities.
The events in Syria could well influence the power dynamics of the Middle East for years to come.
Whether a deal is struck this week or not, the prime minister’s path is fraught with difficulty.
From the tradition of the Black Rod to what happens if parliament votes down the speech, this is all you need to know about today's announcement.