Winseer:
Even the main parties in this country have not the slightest clue how to play the “World Class Statecraft Game” - aka “Real-Life Game of Thrones”.
If they DID - we would have formed stronger ties with Scandinavia and loosened ties with the Balkans and Middle east in the meantime.
If we’d gone through the motions of “setting up more trade with non-EU countries” then the EU might have taken fright a bit at the “forthcoming” referendum - and start offering us consessions already.
NOT doing that is like the novice poker player who is always thinking his hand is weak - merely because it’s not the “Best possible” - and won’t bet it or call an all-in with it.
Thing is, if we DID “re-raise the EU” in all this - the AMERICANS would start to bully the EU rather than the UK over the extended issue of “NATO”… “Look you Euro guys need to bend over backwards to keep the UK in NATO - Let them go, and we’ll close down our bases that protect you (bluff)” leaving the entire Eastern corridor re-open to Iron Curtain annexation (alarmist bluff)" …You get the picture.
Make your next move about shifting all liability onto your opponent to make any “bad decision” that might get made. One should have already put the ball firmly back in their court.
Cameron can still actually DO that by giving a closing date for negotiations that’s very soon, and declaring that “If he’s got nowhere” - then he’ll move the referndum date to “quite soon plus one month to set up” as well. 
Technically speaking, all other options are lickcock options - and don’t warrant looking at.
Our pre 1973 position shows that there is no link between being a part of NATO and being an EU member.
The problem with the USA being that it is a Federalist based government that killed more than a million of it’s own people ( by 1860’s overall population standards
) to that end.As such it doesn’t like the idea of the small sovereign nation states that make/made up Europe,because it views it as a potential threat to the ongoing issue/question of secession and state sovereignty at home. 
The idea of reducing the issue of Sovereignty v Federalism to a poker game makes no sense.IE there are no stakes to play for.With it being more like the choice of staying in a game of Russian Roulette or walking away quick before we find the wrong chamber.
As for the issue of defence it’s obvious that we really need our own nuclear deterrent thereby removing US control over our defence policy.The really scary bit being that even the nuclear deterrent is at best under the control of the US wether we’re in the EU or out or in NATO or out because there is no way that the US is prepared to take a hit at home for a UK launch.
While at worse our trade policy is just strengthening China’s conventional armed forces to the point where even nuking the zb’s at home would probably just mean an even madder massive force invading us anyway.With the intention of just wiping us out as painfully as possible instead of just taking what they want and enslaving us.
On that note it would be fair to say that the whole mess is the result of US domestic and foreign policy which strengthens our potential enemies while weakening us.
While trying to impose a world system of Federal government and ethnic integration.Which is already falling apart on their own streets and among their own policing departments. 