If Theresa May had the least shred of tactics or strategy, she'd have set aside the notion of cosying up to the DUP, and putting the while peace settlement at risk, and invited Jeremy Corbyn to talk about some kind of arrangement for the time being.

Even if he refused, that would have strengthened her by reinforcing her claim to be a one-nation Tory. If he accepted that would have meant she could make a play of having been sincere in that, by actually following through on it. Then they could talk about which bits of her ambitions could be ditched, and whether there were reforms they could actually agree on.

After all, she has indicated she admires Churchill, and he has indicated he greatly respects Attlee, and they did it.