Britain may have to "revisit" its position on Iraq if the threat to national security becomes too much.
Former Army officer Col Bob Stewart MP told ITV News: "Things happen and circumstances change, and if our country is threatened by people from the Islamic State, our national interest, our people are threatened, we may well have to revisit that situation."
ITV's Deputy Political Editor Chris Ship reports:
More top news
British firms predict the economy should sustain a "solid" pace of growth for the rest of the year thanks to lower oil prices and inflation.
A charity has warned of a "pressure cooker environment" in schools putting children's mental health and self-esteem in danger.
The twin brother of the police officer shot and blinded by gunman Raoul Moat says his family are still waiting for justice five years later.