Roll not only followed through on his promise to himself and his family, he transformed his body and his life.

CNN: Rich Roll: From fat dad to ultra-fit father

Vaughan said he had made a decision earlier in the summer to quit if his team were unable to beat South Africa, and he delivered on his promise to himself.

BBC: Vaughan quits as England captain

The parliament cannot pick and choose among the team but Mr Prodi himself has extracted a promise from each member to resign should he request it.

ECONOMIST: Prodi��s new team

On Tuesday, he distinguished himself by saying he won't promise that he'll endorse the eventual nominee.

NPR: Romney, Giuliani Clash at Thompson's First Debate

Parris says Cameron is effectively offering the same promise Harold Wilson made in 1974, but is buying himself more time with it.

BBC: Commentators' verdicts on David Cameron's EU speech