Two British soldiers are killed in a shooting attack in Northern Ireland

We begin in Northern Ireland, where security forces have been put on alert after two British soldiers were killed and four people wounded in a shooting attack at an army base. Police said the attackers opened fire from a car as the victims were collecting pizzas from a delivery man at the Massareene Base north of Belfast. No-one has claimed responsibility -- but the attack follows a police warning of an increased threat from Irish nationalists opposed to the peace process.