The left wants to consolidate power in the dictatorship of the proletariat, though not in a unitary executive leader. Nationalism is tempered by the political environment of the country it originates in. This is why US nationalism is reactionary and the nationalism of the communists in Cuba is revolutionary in character. I recommend reading Stalin's "On The National Question." It's pretty good.
The United States has been using drones for surveilling protests in the United States for four or five years now, actually. They also use them to surveil the border. I'm betting that eventually they will graduate to blowing people up with them within the borders of the continental United States. This is a grim prospect but sadly not totally impossible