https://gizadeathstar.com/2018/12/remember-that-generals-little-green-men-speech/
"If the world in 1916 was complex, or the world of 1945 was complex, the world of 2016 is intensely complex, and I can tell you that from personal experience," he said. "You'll be dealing with terrorists, you'll be dealing with hybrid armies, you'll be dealing with little green men, you'll be dealing with tribes, you're going to be dealing with it all, and you're going to be dealing with it simultaneously."