The United Kingdom's announcement of targeted sanctions on three senior Sri Lankan military commanders and a former paramilitary leader has been long-awaited. Shavendra Silva, Jagath Jayasuriya, Wasantha Karannagoda and Vinayagamoorthy Muralitharan, also known as Karuna Amman, have all committed serious human rights violations. Of that, there is ample evidence and absolutely no doubt. These…