A former U.S. intelligence agent has criticized President Bush's response to a White House advisor's involvement in leaking the identity of a U.S. intelligence officer.

Former Central Intelligence Agency agent Larry Johnson, speaking on behalf of the Democrats in their weekly radio address, accused President Bush of going back on a promise to fire anyone involved in leaking the identity of CIA agent Valerie Plame.

Time magazine reporter Matthew Cooper says top White House advisor Karl Rove revealed that Ms. Plame, who is the wife of a former diplomat, Joseph Wilson, worked for the CIA -- but that he did not reveal her name. Mr. Cooper says he also spoke with Vice President Dick Cheney's chief of staff, Lewis Libby.

A grand jury is investigating whether any government officials broke any laws.

Mr. Wilson says his wife's identity was revealed in retribution for questioning the Bush administration's pre-war claims about Iraq's weapons programs.