> THE senior British official was unequivocal. The murder of the former KGB man Alexander Litvinenko was "undeniably state-sponsored terrorism on Moscow's part. That is the view at the highest levels of the British government".
http://www.thesundaytimes.co.uk/sto/news/world_news/article6...
You might think that some forms of terrorism are worse than others, but that doesn't mean that those are the only forms of terrorism.
This is of course a slightly academic use of the word. Many people have a hard time seeing even traditional domestic terrorism (like the unabomber) as terrorism.