Thread by @Staedtler

The new Tory leader is going to face a vote of no confidence anyway, which they must know they are likely to lose.
The only way they could win it is by promising the impossible

You could promise no border in the Irish Sea. You win the DUP, but then you can't Brexit, so you'd lose as many Tory votes as you gained with the DUP.
No confidence, general election.

Okay, what else?

You could promise to put a border in Ireland. Break the Good Friday Agreement. America would go mental, you would get no trade with them or with Europe. Crisis, what crisis?
No confidence, general election.

What else?

Well, if you're not putting a border up, you'll have to accept may's deal, which the DUP and the Euro nutters will never agree. They've just sacked one prime minister over it. Want another?
No confidence, general election.

Anything else?

Well, what about leaving with no deal? Ha. The DUP and the ERG would take that, and you'd lose by about 400 votes. Nork.
No confidence, general election.

Oh dear me, we are running out of options, aren't we?

Well, if you can't put a border in Ireland or the Irish Sea, if you can't leave with no deal and you can't have May's deal . . .

You can try a second referendum. But the Brexiteers would mutiny, and Labour would bring a vote of no confidence.

See? Whatever happens now we're getting a general election, and the only question is what everyone puts in their manifesto.

Looks like you're going to get the referendum you wanted.