Originally Posted by
Philippus Flavius Homovallumus
It's not that the EU should necessarily bend to Britain's wants or needs, it's that they are currently pretending those needs don't exist.
A British Parliament cannot sign a treaty in good faith if it commits a future Parliament to be bound by a provision of that treaty in perpetuity. This is especially the case if said provision is meant to be temporary but everyone expects it to end up being semi-permanent.
Parliament has indicated it will not accept the treaty negotiated by the Government. The sticking point is the Backstop, the EU wants a perpetual one, the UK wants one it can withdraw from. The middle ground here is a long-ish time limit to the backstop with an option to extend.
In the UK Parliament, not the Government, is Sovereign. The Government serves under the sufferance of Parliament, not the other way around. Under other circumstances we would now be having an election, the only thing stopping that is the impending Brexit.
The leaders of the EU, though not necessarily the Member States, are acting like it's Theresa May's responsibility to get Parliament behind the deal but she can't and they won't.
So, the EU has two options, offer the UK Parliament something it will accept, or accept No Deal and stop going on about it.
Theresa May can absolutely be held responsible for giving Tusk and Junker the impression she was ever in control of this process, because she never was. Frankly, I don't think Tony Blair could have got THIS deal through Parliament in 1997, so there's really no hope now.
The leaders of the EU absolutely DO need to appreciate the constitutional position of the UK and what that makes possible or impossible.