Labour MP Glenda Jackson has condemned the Iraq war as the “worst foreign policy decision of my lifetime” on the tenth anniversary of the conflict.

The MP for Hampstead and Kilburn spoke in the House of Commons today to express her disgust at the invasion of Iraq in 2003 and the importance of not repeating mistakes made then in Iran and Syria.

She spoke during the Iraq War Tenth Anniversary Debate, citing the event as the “worst foreign policy decision in my lifetime, if ever”.

The two-time Oscar winner said: “I don’t want to rerun the dodgy dossiers and hard truths, which are in the public domain already, for what was a border-line illegal, and still ongoing war.

“The true tragedy was that no-one sat down and seriously discussed how we were going to win the peace after the bullets stopped and bombs ceased falling.

“You cannot invade somewhere without a plan of how justice, peace, prosperity and happiness can be built following a war.

“I vividly remember the day the news emerged that 52 British Ambassadors had written to the Prime Minister urging him not to invade Iraq back in 2003.

“We must listen to the expert people around us and within countries who understand their own homes.

“The most important thing now is that we learn from this ‘horror’.

“We must never ever go down that road again.

“This is incredibly important with the ongoing conflict in Syria, and I hope the Prime Minister will take heed.

“We must draw a red line in the sand.

“The screaming message that comes out of this is that it is desperately easy to kill and to destroy, but it is much harder to rebuild.”

The MP also railed against the word anniversary being used in the name of the debate.

She said an anniversary was something to be celebrated where as the war was “an example of how absolute power corrupts absolutely”.

Ms Jackson was first elected as an MP in 1992 and was a vocal opponent of the Iraq war during Tony Blair’s government.

The MP became so anti-Blair that she threatened to challenge his leadership as a stalking horse candidate and on many occasions called for the Labour prime minister’s resignation.