There's an old fable about a scorpion that convinces a frog to carry it across a river. The scorpion repeatedly promises it won't sting the frog, and finally convinces the amphibian to carry it across. When they reach the other side, the scorpion promptly stings the frog. The dying frog asks why, after all the promises, the scorpion stung. The scorpion replied, "I couldn't help it. It's in my nature."It's in the nature of Hamas to be murderous and brutal, and only a day after the signing of a historic peace deal between the terrorist group and Israel, Hamas is...