Arnold Schwarzenegger has defended the violence depicted in his new film 'Collateral Damage'.

The actor plays a fireman who seeks revenge after his family are killed by terrorists.

The release of the film was postponed last year following the September 11 terrorist attacks on the US World Trade Centre.

Arnie says "besides looking at it as an escapist movie, where you can sit there and watch the hero kick some serious butt amongst the terrorists", the film has a "serious message" about the loss of innocent lives.

'Collateral Damage' opens in Ireland this Friday, 5 April.