26 deaths in 17 years is not a threat.
Ah, so there is a minimum number of dead before a threat is a threat? Is that how we are measuring it nowadays? How many is that? How does any country know that there are enough dead citizens that she is permitted to respond?
Does it reset itself every year? I mean, in January, do you have to wait until enough citizens are dead before you can respond to lethal force?
Oh, and do you have a link to that somewhere in IHL? Where it outlines the exact number of dead necessary before a nation can respond to lethal force against its citizens?