It would help, but it's 1200 years too late. Treating Patient Zero, Mad Mo, would have stopped the problem at it's source.
Maybe massive amounts of laughing gas!?
If there were EVER people who could use it, it's this bunch!
Some 'happy meds' in the water?
What if they were all to find themselves in a GOOD mood suddenly, just giddy with happiness?
So many people don't want us to kill'em- how about chemically happy jihadists?
Wonder if the CIA ever considered the happy-meds approach?