Former Prime Minister Tony Blair supported military operations in Iraq about a year before the British Parliament approved such action, according to 2002 memo written by then-U.S. Secretary of State Colin Powell.

The memo published in the Mail on Sunday was written before Blair's April 2002 visit to President George W. Bush's ranch in Crawford, Texas. The once-classified memo was released following a 2012 Freedom of Information request.

"On Iraq, Blair will be with us should military operations be necessary," Powell wrote.

Blair's office said the memo was consistent with his testimony to the U.K.'s Iraq war inquiry, but its emergence will increase pressure to release the results of that investigation, which began six years ago.