Jim,
"Politicians do lie, but if they are caught in a lie they have to resign from office."
You are joking of course

No. It is a fact.

How is that (politician's) promise going to be honoured

By UK not constructing any infrastructure at the border whatever the outcome of negotiations, as promised.
Eire claims to want that too, but they have little influence over the outcome.
EU is threatening a hard border just because they know we do not want that.

Donuel,
Why has your government NOT decided how close they intend to remain with the European Union? Its 'Big been' awhile.

Because it is not up to us. We have been clear all along we want to be as close as ever and for free trade to continue, but they can not allow our leaving to be successful or others might follow.
They also need to extract money from us so have to make threats like the border issue.