Dozens of managers of construction firms under contract to Petrobras face criminal charges.For such things to become thinkable in Mexico, several changes are needed.
Less than a year after Gordon Brown succeeded Tony Blair, the idea of installing a third front man has become thinkable for some of his erstwhile supporters.
If Mr Clegg is serious about refusing a role in any SNP-supported government, it is entirely thinkable that no group of parties willing to work together (or at least, go the same way in votes of confidence) will be able to command a majority in parliament.
One diplomat believes that Bosnia's gridlock has got so bad, and the political atmosphere so poisonous, that for the first time since 1995 the unthinkable of renewed fighting is thinkable once again.
The 21st century has seen so many examples of "the unthinkable", from the twin-tower attacks to the recent financial meltdown, that the unthinkable is now routine and thus thinkable.
In future even $100m is thinkable if his client base, currently numbering 130, expands beyond America.
Things could get messy.Making a municipal default more manageable, and therefore thinkable, is one of the many tasks facing China's leaders.
The second-in-command is Mamman Nur, who once studied in Sudan and masterminded the bombing that blew up the UN's headquarters in Abuja last year.Is negotiation thinkable?The council issues orders to its thousands of followers and would have to endorse any peace deal with the government.
But what is the attraction for shareholders of Lloyds TSB, unless they share Deutsche's dream of a world-straddling giant?Other more thinkable cross-border mergers in Europe also founder on several counts.
That would not be thinkable today: death cannot be imposed by the Yugoslav and Rwandan war crimes tribunals even for the worst atrocities.
"My goal is to make people feel like first-class citizens, even if we can't meet all their demands," explains Osman Baydemir, the new mayor of Diyarbakir, Turkey's largest Kurdish-dominated city, which he dreams of turning into a "world-class" metropolis.At least when he took office in March, such fantasies seemed thinkable.
