Angela Merkel's hand-picked choice for the ceremonial post of president resigned today in a scandal over political favours, dealing a blow to the German chancellor in the midst of the euro zone debt crisis.
In a curt five-minute statement at the Bellevue presidential palace, Christian Wulff acknowledged that he had lost the trust of the German people, making it impossible to continue in a role that is meant to serve as a moral compass for the nation.
"For this reason it is no longer possible for me to exercise the office of president at home and abroad as required," said Mr Wulff, standing next to his wife Bettina.
Dr Merkel postponed a trip to Rome where she was to hold talks on the euro zone's debt crisis with Italian prime minister Mario Monti. She made a brief statement after Mr Wulff spoke, saying she regretted his departure and would seek talks with opposition parties to find a candidate to replace him.
The chancellor is riding a wave of popularity in Germany for her handling of the crisis, but the departure of Mr Wulff raises questions about her judgement as she forced through his appointment over a strong opposition candidate who polls show most Germans favoured.
He is the second president to step down in less than two years.
His predecessor, former International Monetary Fund chief Horst Koehler, resigned unexpectedly in 2010 after coming under fire for comments he made about the German mission in Afghanistan and failing to get strong backing from Dr Merkel.
The resignation is likely to embolden the opposition Social Democrats (SPD) and Greens, who have shied away from criticising Dr Merkel too strongly in recent months.
Despite her vow to find a consensus candidate to replace Mr Wulff, the choosing of a successor could prove divisive, distracting her just as European governments are trying to cobble together a second aid package for Greece to avert a chaotic default and euro zone exit.
How much of a distraction it becomes depends on how fast a successor can be agreed upon.
A vote in the 1,244-seat Federal Assembly must take place within a month, or by March 18th.
A member of Dr Merkel's Christian Democratic Union (CDU) who served as premier of the western state of Lower Saxony, Mr Wulff was once seen as a potential rival to Dr Merkel and many in Germany saw his appointment as a ploy by the chancellor to push him out of the political arena.
He has long cultivated a schoolboy image, but his reputation took a hammering when the Bild newspaper reported late last year that he had misled the state parliament about a cheap €500,000 home loan from a businessman friend before becoming president.
Last month he admitted making a "grave mistake" by threatening the editor of top-selling Bild with "war" if he published the story about his private finance dealings.
Since then, there has been a constant stream of new revelations that have chipped away at his credibility, leading the German media to mock him and even invent a new verb in his honour.
"Wulffen" - or literally "to Wulff" - means to be evasive without telling a clear lie.
On a trip to Rome earlier this week and in a briefing with a small group of journalists yesterday, Mr Wulff made clear he planned to hang onto his post.
But the situation changed dramatically in the evening when state prosecutors in Hannover, the capital of Lower Saxony, asked parliament to end his legal immunity over accusations he accepted favours in a prelude to opening an investigation.
It is the first time ever that prosecutors have wanted to investigate a German president and the move triggered direct calls from opposition parties for the 52-year old Mr Wulff to go.
"The office of the presidency has been damaged. Mr Wulff's resignation was necessary but it came too late," leaders from the opposition Left Party said in a statement.
The leading contender to succeed him is Joachim Gauck, an anti-Communist human rights activist in East Germany who ran against Mr Wulff in 2010 and embarrassed Dr Merkel by forcing the election in the Federal Assembly into a third round.
Wolfgang Kubicki, a senior figure in the Free Democrats (FDP) who rule in coalition with Dr Merkel, said many in his own party had broken ranks and backed Mr Gauck two years ago.
"He would be able to restore confidence in this office," Mr Kubicki said, stressing the importance of securing a broad majority in the Assembly, in which Merkel's coalition parties hold a razor-thin majority.
Other potential candidates include defence minister Thomas de Maiziere, labour minister Ursula von der Leyen, Bundestag president Norbert Lammert and possibly finance minister Wolfgang Schaeuble, though shifting him to Bellevue palace would leave a gaping hole in Dr Merkel's cabinet in the midst of the euro zone sovereign debt crisis.
Dr Merkel has been criticised in the past for what has often looked like a concerted policy of sidelining capable figures in her party who she sees as potential rivals.
Former Hesse state premier Roland Koch abruptly resigned in 2010 after realising Dr Merkel would never give him a cabinet job. The chancellor sent Guenther Oettinger, former CDU state premier in Baden-Wuerttemberg, to Brussels where he now serves as Energy Commissioner.
The moves have left Dr Merkel as the undisputed leader of the CDU, but some conservatives worry that the party has now become overly dependent on her and lost its identity and traditional values.
A poll last week showed 77 per cent of Germans approve of the job Dr Merkel is doing.
Support for her conservatives has pushed up to its top level since mid-2009, pulled higher by the popularity of the pastor's daughter from the former East Germany.
Reuters