After months of negotiations, the European and British brexitonderhandelaars at the end of november a preliminary terugtrekkingsakkoord. May's deal got then -albeit with long teeth - also the green light from its government. Also the European leaders gave their fiat, but the real big hurdle is in the British parliament.
There was actually already in december on the draft agreement need to be tuned. But premier May pulled when at the last moment, her tail because they felt that the deal did not have enough votes it would get.