Signed or not, when it comes to the type of ammunition used in war, the entire Hague Convention is born and bred on stupidity. It lacks common sense, and shows politicians were trying to pass, "feel good" legislation even back then. "Kinder, gentler bullets" are idiotic. 12 gauge shotguns, commonly called, "Trench Guns", loaded with 00 Buck have been a common weapon used in every war since WW I. (Possibly even before). The carnage they produce when used close in is devastating. Far worse than any hollow point 9 MM, or .308 soft point.
Even the wounds produced by a fragmented 5.56 MM round are much worse. There is no reason today for any of our armed forces to be using FMJ ammunition in handguns, or any other small arms for that matter. You use what makes the weapon the most effective. Police do on citizens. Why shouldn't the military on our foreign enemies? The whole thing reeks of stupidity. And shows what happens when politicians are allowed to operate beyond their very narrow scope. In this case, they put all 4 wheels in the ditch.