Unratified concessions

SIR, – As I recall, Prime Minister David Cameron said earlier this year that if he did not get the reforms he sought from other member states, he would be in favour of leaving the EU. 
If we, the public (who are less likely to be better informed than the PM), need some touchstone to inform our choice it should be the merits (or otherwise) of what he has secured. 
However, none of the concessions and pledges negotiated have been ratified and look unlikely to be, before June 23. 
It is more than likely that part of his negotiating position with our fellow member states is the possible threat of a UK withdrawal. 
A remain victory on June 23, no matter how slender, removes much of that threat, and with it any urgency on their part to honour and implement an as yet unratified agreement. 
It may take them years, or not at all. Recall, if you will, how tardy some were at meeting agreed animal welfare standards and what clout would Britain have within the union to enforce what Mr Cameron negotiated. We could then be still in the EU, but less influential.
   In the many televised programmes about Brexit I have seen, few seriously challenge the remain campaign on this crucial point. 
U-turns and their ilk are far from rare in any of the politicians or parties wherever you look, so why are our media so sure that European politicians will behave better than our own?