There's a word for that: Dictator

From the Trump comments on Putin in the NBC Forum:

I've already said, he is really very much of a leader. I mean, you can say, 'Oh, isn't that a terrible thing' -- the man has very strong control over a country.

Now, it's a very different system, and I don't happen to like the system. But certainly, in that system, he's been a leader, far more than our president has been a leader. We have a divided country.

The bottom line, Trump admires and praises dictatorship. There is nothing more contrary, opposite, anathema to the United States than admiration for a dictator and a dictatorship, one which has acted against the United States repeatedly through cyberattacks. No one should admire Putin, or the government of Russia. No presidential candidate should praise an enemy of the United States. The word for Putin: Dictator.