These banks would suddenly be shut out of the capital-raising business to shore up their broken balance sheets because global liquidity would instantly freeze (recall the Lehman Brothers bankruptcy and its aftermath whereby financial institutions could not readily access capital).

FORBES: Euro-Crisis Side Effect: Your Prime Money Market Fund Could Break The Buck

In 2011 Germany suddenly decided to shut its nuclear power stations.

ECONOMIST: Energy markets

The Penguins looked plenty comfortable when they took a 3-0 lead 1:44 into the third on Sutter's goal, but the Islanders suddenly stormed back just as it seemed they would be shut out at home for the second straight game.

WSJ: Penguins hold off Isles despite 3rd-period rally

Professor SAPOLSKY: Suddenly, novelty is real appealing and in early adulthood, the window slams shut.

NPR: Does Age Quash Our Spirit of Adventure?

Congress nearly shut the door on trial lawyers a year ago, but it then suddenly dropped the ball and hasn't picked it up since.

FORBES: Fact and Comment