In the 21st century…

“In the 21st century, nations don’t invade other nations” -John McCain

Video with some context (it doesn’t help):

I honestly can’t figure this one out. I’m at a complete loss. I can’t imagine that the defining American military issue of the last decade slipped his mind. Does he really not consider Iraq, Afghanistan and Lebanon to be invasions?

I looked up some definitions of the word, just to be sure, and I’m quite sure it’s irrefutable. Any ideas?