Did you know that pigs can fly? No? Well the warthog is the national bird in Iraq, so you're wrong.
I don't get it. Is this joke your idea of something humorous? Would the Iraqi people find that funny?
I don't think you understand the joke. I'm not saying that Iraqis are pigs. I am saying that their national bird is a warthog, which is amusing because most people think of wild pigs when they say Iraq so the conflation of ideas--pigs flying in Iraq--is funny.
Besides the convoluted joke about the Iraqi war, people are not going to take kindly to war puns. War is hell and both sides of it wouldn't find anything humorous related to it.
That's just your opinion.
It's most people's opinions not to take kindly to offensive jokes like that.