One note, Rubio employs some of the slogans, and even myths, of populism about free trade and industrialization, but subtly pivots to something that looks more like free trade with our allies and the avoidance of dependency on our adversaries.
It's masterful rhetoric. He's both persuading the Trump administration toward a more reasonable path, and presenting a more attractive vision for his European audience.
This is not unlike what he did in the Senate hearing about Venezuela.