The fund sought to reduce its exposures but its credit positions were impossible to sell.

ECONOMIST: The peril for markets when computers miscalculate

Hedge funds may be forced to sell their most liquid holdings since more complex positions may be impossible to offload.

ECONOMIST: Buttonwood

"We trust that it is not impossible to bridge the gap between stated positions of the two institutions, " the judge said.

BBC: Pakistan judges give PM two more weeks to pursue Zardari

Certain positions in the administration have become almost impossible to fill.

ECONOMIST: Presidential nominations

If Netanyahu gives a speech before Congress in which he effectively embraces Obama's anti-Israel positions as his own, he would make it practically impossible for Republican lawmakers and presidential candidates to criticize those policies.

CENTERFORSECURITYPOLICY: Richard Goldstone and Palestinian statehood

It is impossible as a practical matter to provide for separation of the sexes in frontline positions.

CENTERFORSECURITYPOLICY: Destroying the US military from within

And Nadal used to be the greatest by a mile at wriggling out of impossible situations, at saving crucial break points and hitting passing shots from awkward positions on the court, especially when a match was on the line.

WSJ: With 'Outrageous' Australian Open Win, Novak Djokovic Sets Sights on Paris