You have to have as many defences in place as you possibly can. But even then of course - and it's important to stress this - you cannot guarantee being able to prevent every attack or every kind of attack.

Hague rose through the ranks of John Major's government and entered the Cabinet in 1995 as the Secretary of State for Wales. In Parliament he has represented the constituency of Richmond (Yorks) since 1989. After David Cameron was elected leader of the Conservative Party in 2005 Hague returned to front line politics as shadow foreign secretary.