Germany has vetoed French and Italian ideas for an EU lifeboat fund. The former knows exactly where that leads. It is a Trojan horse that will be used one day to co-opt German taxpayers into rescues for less Teutonic EMU kin. One can sympathise with Berlin. But sharing debts with Italy and Spain was implicit when they agreed to launch the euro. A shared currency entails obligations. We have reached the watershed moment when Germany has to decide whether to put its full sovereign weight behind the EMU project or reveal that it is not prepared to do so in a crisis. This is a very dangerous set of circumstances for monetary union. Will we still have a 15-member euro by Christmas?