Manuel de la Pena y Pena -- president of the supreme court -- became acting president.

VOA: special.2009.02.26

One is the Speaker of Parliament and Acting President Bronislaw Komorowski, from the governing center-right Civic Platform party.

VOA: standard.2010.07.03

Many Americans blamed President Grant for not acting quickly enough to stop the activity of his two friends.

VOA: special.2010.02.18

Nino Burjanadze is speaker of parliament and the country's acting president during the election.

NPR: Calm Urged in Georgia After Disputed Election

Putin became acting president of Russia, the world has barely begun getting to know him.

CENTERFORSECURITYPOLICY: Restoration Watch: Putin's 'Remilitarization' Campaign

Mr Maduro had been serving as acting president since Mr Chavez died of cancer on 5 March.

BBC: Chavez heir Maduro wins Venezuela presidential election