Does European solidarity have a new champion?

Apparently, Cameron told the BBC the following this afternoon:

"I understand Angela Merkel’s difficulties and her political difficulties because the Germans have run their economy very effectively over many years. But it’s their currency, they need their currency to work, so they need to have guarantees from other parts of the eurozone that they’re putting their house in order, but there has to be solidarity as well."

Solidarity? As long as it doesn't involve Britain itself of course. Not. Smart. Politics.