Secret To World Peace
Tryptophan, for those of you not up on your biochemistry, is an amino acid that encourages the production of serotonin and melatonin in the brain. These chemicals, in moderate amounts, create feelings of calm and sleepiness respectively. It is naturally occurring in a plethora of foodstuffs, but is unusually high in turkey.
So, lay a nice big spread of turkey dinner before all the world leaders, and let 'em work out their differences before nodding off.
Oh, come on! It'd work! :)