He says: China, Russia, North Korea (our foreign enemies) are no problem. It’s the enemy within (your neighbors) that are the problem. 

He’s gussied it up here, but what he’s really saying is “I will not protect you from our nation’s enemies… we will be vulnerable to them… but I WILL weaken the USA from within, by pitting you against each other. By pitting neighbor against neighbor.”

That’s the real message. 

And he couldn’t be a more effective Putin controlled Cold War operative if he tried. 

He is the Manchurian Candidate. Full stop.