Hardly swept under the carpet. It's an ongoing diplomatic headache. Just a couple of weeks ago, a public enquiry (which Litvinenko's widow had pushed for) publi

Hardly swept under the carpet. It's an ongoing diplomatic headache. Just a couple of weeks ago, a public enquiry (which Litvinenko's widow had pushed for) publicly announced that Litvinenko was most probably murdered by the FSB with Putin's approval.