Gad, you're hyper-partisan to a fault.
Democrats haven't blocked missile defense systems. They didn't block THAAD. They didn't block the missile defense systems the Pentagon are now testing.
No, in your warped world, the fault for North Korea's missile test is with the Democrats.
It would never occur to you that leaders of foreign countries are quite capable of acting totally independently of what the president of the United States thinks of them.