Update: Reading that article, I come to this bizarre paragraph:
"The storming of the British embassy was the latest, and most violent, blow struck in a long-running battle of wits over Iran's nuclear programme. Diplomats had been expecting a major protest in Tehran on Tuesday to mark the first anniversary of the assassination of a senior Iranian nuclear scientist, Majid Shahriari, one of three killed over the past two years in the streets of the capital. "How can a protest, leading to criminal damage and a few FO workers being jostled be called 'the most violent blow', when, in the same paragraph, it notes the assassinations of various Iranian scientists?
I am, by the way, aware of the rules about protecting embassies, but let's not get so fucking precious about it, eh.