One of the few surprises lurking in Germany's cabinet re-shuffle was the return of its man at the European Central Bank (ECB), Joerg Asmussen, to Berlin.
His departure from the ECB, for a post as deputy labor minister in the new German government, leaves open the question of who will succeed him to what is arguably one of the most important jobs at the central bank. Germany is the euro zone's biggest economy, so is one of the most influential voices at the central bank. Asmussen had been a key interpreter between German political opinion, which frequently urged a harder line on the euro zone's struggling states, and the ECB's Governing Council.
(Read more: Germany striding ahead)
The tougher German line on policies like the bond-buying program dubbed Outright Monetary Transactions will continue to be represented by Bundesbank President Jens Weidmann. So it is important for the unfolding of the euro zone debt crisis that someone who can urge a softer line in Germany be selected.
As Chancellor Angela Merkel settles in to the new coalition government, anything which suggests Germany may decrease its support for the ECB could unsettle markets.