Your Brexit guide: Here's all you need to know about what's happening in UK

After delays, stumbles and negotiations, Prime Minister Theresa May this week finally presented her plan for Britain’s withdrawal from the European Union to Parliament. Then, on Tuesday, British lawmakers resoundingly rejected it, 432 to 202.

It was one of the biggest defeats in the House of Commons for a prime minister in recent British history.

The humiliating margin has put her government on the verge of collapse.

Supporters of Brexit, as the withdrawal is known, had once promised that leaving the European bloc would be quick and simple. It has turned out to be neither.

To understand why, it helps to understand the origins