Democratic Unionist Party
The shock announcement has rocked Northern Ireland politics.
Michelle O'Neill has just become the first nationalist to lead the region's government.
Could power-sharing at Stormont finally be restored after two years of delays and boycotts?
It comes after Keir Starmer was criticised by Tories for leaving the door open to a deal with the Lib Dems.
Chris Heaton-Harris sparked fury with a speech in Belfast.
It's a huge blow to the prime minister's authority.
Which way will the DUP jump - and will there be a Tory rebellion?
The prime minister wants the unionist party's backing for the Windsor Framework — but will it be forthcoming?
"They need to get back in," Rishi Sunak said.
The DUP and Tory backbenchers are now poring over the details of Windsor Framework.
About Democratic Unionist Party
Who are the DUP? What are their policies? Questions are being asked of the Democratic Unionist Part after entering into a 'confidence and supply' arrangement with Theresa May and the Conservative Party in order to help their minority government pass legislation after the UK general election in 2017. Their leader Arlene Foster has vowed to 'bring stability to our country' by supporting the Tories.