As those who were forced to do it at school could have told me (thanks guys) this latin stuff is harder than it looks. However, I am now able to provide the two must have, grammatically and linguistically correct phrases.
For those new to this subject, a briefing.
Marcus Porcius Cato, also known as Cato the Elder, was and is famous for his habit of declaring that Carthage must be destroyed. “We should re-roof the Temple and Carthage must be destroyed, the sewers need repairing and Carthage must be destroyed”. The phrase used was “Carthago Delenda Est“. As and when he was being slightly more on topic, for example discussing the strategic problems of a two power Mediterranean, he would end with “therefore I conclude that Carthage must be destroyed,” or, “Ceterum censeo Carthagem esse delendam.” After two decades of this the Romans gave in, conquered Carthage, pulled down the walls, sold the population into bondage and ploughed the fields with salt.
What I have been trying to do over the past few days is to update this to refer to the European Union. We’ve slowly got closer to the truth (with a lot of help from this guy) and started with the idea that “European Union” was “Consilium Europaeum ” which could be correct but unfortunately is much closer to meaning “Council of Europe” which is a completely different organisation. We then moved to “Unio Europaea” as this is what they themselves refer to, um, themselves, as. It’s also the way that they are referred to in Latin news reporting.
I actually got confirmation of that by writing to the EU’s own Latin translation help desk so we now know that “Unio Europaea Delenda Est” is the correct short form. Yet what of the longer form? Does Unio move around?
Looking at dictionaries and so on didn’t get me very far, especially as those for Classical Latin indicated that “Unio” meant “large pearl”. I suppose that one can take that two ways, that the European Union is in fact the “Large Pearl of Europe” or that it is an irritant, a poison which we must isolate by consistent excretion and subsequent encapsulation.
So, back to our friendly translator who was, shall we say, a little unhappy at the phrase into which I wanted to put his Unio. Verbatim:

Let me tell you first of all that it isn’t a good idea to use a language
that you don’t know. Especially if what you wish to say may hurt some
people. In Europe, for the first time in History, no war has been fought in
over fifty years thanks to the EU. And thanks to the EU, in whose
translation service I work, I can tell you now how to put your sentence in
good Latin: CETERVM CENSEO UNIONEM EVROPAEAM ESSE DELENDAM.
I’m not a Europhile, but I try to be fair -I don’t think it’d be a good idea
to destroy the EU. But I respect your views. Allow me only to remind you
that the EU is not Carthage, Britain is not Rome and you aren’t Cato.

My response was polite yet as you can imagine I disagreed slightly. Anyway, his further:

Thanks indeed for your message, Tim.
I see you’re a nice fellow, albeit a bit misinformed. Allow me please to
give you some facts:
– The European Union has not existed since 1992. Under a different name, but
with the same aims, it was founded in 1957 (as a positive result of WWII).
– Since 1957 till 2004 no war has been fought between Europe’s eternal
enemies -Germany, France and Britain. (The American Army alone is not
responsible for that.)
– The Balkan countries are beginning to join the Union, which is a
guarantee that they won’t butcher each other any more.
I’m not an economist, but do you know why Britain invented EFTA? Not only
because of economics, but also because of politics -you only have to check
the date when it was founded and the countries that were invited to join
(almost a circle around the emerging united Europe) to see the game. When
Britain realized that its encircling strategy didn’t work, it left EFTA and
joined the Community. 1973. I was living in London at the time and remember
well the debates for and against. Since then, many things have happened, but
Europe keeps growing while some Britons keep kicking against it. Why?
However much I admire the British, I must tell you I don’t understand that
idea of “loss of sovereignty” that keeps coming up almost every time I watch
the BBC. Have you ever asked yourself what amount of sovereignty the French
have lost? Or the Irish? The euro has been adopted and everybody is happy
with it, especially if you’re a traveller. Only the British have to waste
time changing money at borders. That’s not fair. I think that the problem
lies deep in contemporary history. Britain enters the 20th century as the
biggest empire on earth, and exits it as a second-rate power. That has to be
digested and absorbed and it takes some time, but it is unhealthy to prolong
it endlessly. Believe me, nobody in Europe has lost sovereignty (and those
who deal with that here in Brussels aren’t aliens, but your fellow citizens,
sent here by your own government). One last thought: Only people who aren’t
sure of their identity fear losing it (Cicero might have said that).
Like you, I’m an insignificant citizen. But I don’t think that in the modern
world you can live in your ivory tower.
Sorry for being so long, and thanks again. To you and to the EU (without it
I wouldn’t have been able to exchange these lines with you).

Again, I made a polite response yet was a little puzzled over the last line. I thought it was Al Gore who invented the internet and CERN for the WWW?
Still, enough of playing with (perfectly nice and helpful) bureaucrats.
We now have, direct from the horse’s mouth, the correct phrase:
CETERVM CENSEO UNIONEM EVROPAEAM ESSE DELENDAM. or, if we are allowed to invent words like Unio we can also add a “u” to our alphabet the phrase becomes thus:
“Ceterum censeo Unionem Europaeam esse delendam” which is where I think we should leave our translation efforts and get on with the process of spreading the word. Contributions of stories, graphics, photoshops, cartoons and the like will be greatly appreciated and will be put up here for others to borrow and post.