What Alan Greenspan did and what his successor, Ben Bernanke, has failed to undo is the exact opposite of Greenspan's big blunder in the late 1990s, when the Federal Reserve inadvertently tightened up.

FORBES: Magazine Article

Exuberance--and inexperience--led him to his first big blunder.

FORBES: Companies, People, Ideas

Security Council not to make another big blunder like the one in the past when it earned the inveterate grudge of the Korean nation by acting as a war servant for the U.S. in 1950.

NPR: Furious Over Sanctions, NKorea Vows To Nuke US

To precipitate a crisis in the nearest big Muslim country, and one that is both democratic and secular, would be a colossal blunder.

ECONOMIST: Charlemagne