The deaths of British jihadis, Ruhul Amin and Reyaad Khan, in an RAF drone strike in Syria has raised some interesting and important questions. Under Article 51 of the UN charter, every country has the right of self-defence and, according to David Cameron, Khan had been planning attacks on UK citizens. But, essentially, a death penalty was imposed in response to a perceived threat rather than an actual attack and the executions were carried out without trial (by means of a drone in a country with which the UK is not at war).
So how should we deal with the threat posed by home-grown jihadis? Are such executions justifiable (militarily and morally)? If the charge against Amin and Khan was treason, should other British jihadis expect that their treachery will be dealt with in this way?