If he really wants to kill, he should be psychoanalysed for risk of public danger.
Even though the people he wanted to kill were in the Syrian army?
That would definitely put David Cameron on dodgy ground.
Navy ready to launch first strike on Syria
“Royal Navy vessels are being readied to take part in a possible series of cruise missile strikes, alongside the United States, as military commanders finalise a list of potential targets.”
I’m assuming this would have involved quite a few people in Syria being killed.
The only reason Cameron didn’t succeed in his aim to kill Syrians is because his plans were thwarted by the House of Commons.