I recently watched a BBC interview with Angela Merkel, the German Chancellor – a very rare event since she has only once before given an interview to the foreign media.

The interview represented a considerable feather in the cap of the BBC, further confirming its status as the world’s premier broadcaster.

The interviewer, Newsnight’s Gavin Esler, wanted to get inside the head of the person who will largely determine the future of the eurozone and, to some degree, the rest of the world.

The visual aspect of TV makes it very difficult for an interviewee to ‘fake it’; to pass himself off as someone else. His body language and emotions are often plain to see; and when his face occupies most of a 42″ screen in your living room, you feel you can almost look into his soul. TV greatly assists in our quest to sort out the wheat from the chav.

Merkel came over as a pleasant, but no-nonsense, woman – interested more in getting the job done than in sound bites. Astute as she was with thoughtful responses, she seemed genuine.

And there was more than a little guile there too (but you don’t get to lead the most powerful economy in Europe without a level of that).

It was not difficult to understand why she had taken a shine to our own prime minister – the polished, well-mannered product of England’s leading public school. She may even have fancied the younger man a little, or perhaps felt a tad motherly, seeing him as the archetypal English gentleman as opposed to the coarse, bling-loving French president who wants to smother her at every opportunity with Gallic kisses. The contrast is stark.

Cameron is a most courtly emissary from a fellow Teutonic power which, from early childhood, she had come to respect. Yet despite its bombing of large areas of her beloved homeland almost back to the Stone Age only a generation or two before, it is apparent that – in economic terms at least – Merkel regards Britain as a natural ally and one she is most unwilling either to offend or marginalise.

The BBC was right in picking Gavin Esler as the interviewer, since Paxo might have been too adversarial by adopting his characteristic ‘master inquisitor’ approach.

But what I really gleaned from the interview is an appreciation of the lengths to which Germany will go to save the single currency.

Up to now, Angela Merkel has, understandably, played hardball. The German taxpayer is not going to throw his money at profligate nations which show an unsatisfactory willingness to change their ways.

The Germans want a new economic order in Europe so that nations act responsibly in the future; and to this end they want robust systems in place in the form of a fiscal union.

Germany is not interested in imposing a German jackboot, but wants the whole exercise to be seen as a pan-European affair – even though a fiscal union would result in all 17 eurozone nations’ budgets being overseen by EU officials: a fact masked by a Byzantium-level of cunningness or ingenuity (call it what you will).

I came away from that interview convinced that the German political elite do not want a single member – not even Greece – to drop out of the eurozone. And when push comes to shove, they will do everything in their power to see that this does not happen. They see the loss of a single country as the trigger that will begin the unravelling of the entire single currency and, more than that, of the whole ‘European Project’ to which it is so utterly and irredeemably committed.

So now, it would seem, it is down to the individual eurozone member states to do what is necessary. Only time will tell whether the eurozone’s peripheral countries’ impoverished citizens will – or even can – stay the course.

Pain levels in Greece – and now, more alarmingly, Spain – are at breaking point. A pistol shot to the head outside the Greek Parliament of a 77-year-old retired pharmacist has a terrible resonance with that pistol shot long ago at Sarajevo which set in motion the chain of events which led to the First World War.

Germany has to understand that PIGS’ (Portugal, Italy, Greece and Spain) citizens can take little more pain. While it was necessary to start the austerity drive and change PIGS’ spending habits, it is clear that austerity alone is fast becoming counter-productive.

If Germany wishes them to hold on, she must give them hope – and this can only mean a plan not just for cuts, but for growth. She must put together and spearhead a new Marshall Plan of aid – such as saved Europe in the aftermath of the Second World War.

Germany does not wish to be cast as the villain all over again; the one who did wrong by Europe for a third time, only now by economic, rather than military, might.

Now that we have all come to understand that we must stop living beyond our means, and that the social model we have developed is unsustainable, we are in a position to go forward.

Only by means of growth and a smaller state sector have we a chance of paying down our debt.

Fearful and envious as we may be of the developing countries – and that includes the oil producers – they are as one in wanting us to succeed; for if we go down the pan, we are as likely as not to drag them down with us – and they know this.

They might even feel that it is in their interest to involve themselves in such a rescue plan. But they will not do so if they see north Europe, and in particular the Germans, sitting on a pot of gold but refusing to use it to kick start their own salvation.

God, as they say, helps those who help themselves.