But what’s actually happening in the real world is irrelevant to liberals, who don’t dare criticize US foreign policy for being too aggressive for fear of appearing disloyal, and so they’re only capable of criticizing it from the right.
When I hear stuff like this I literally do not understand what you're talking about. Who are these liberals afraid to appear disloyal? Are you talking about international relations, internal government representatives or the voting bloc that might identify themselves as liberal or part of the liberal identity? Because my next question to whoever you're going to label as the "liberals" is -- what the hell are you talking about? Liberal voters are never-endingly critical of their representatives / government, politicians in liberal nations benefit from appearing to be "not the other guy" and cause disloyalty in all directions towards their opponents, international relations between liberal countries is literally the equivalent of public shaming to try and keep each other in step together. All left-leaning political factions engage in the circular firing squad, constant criticism that drags each other down, Marxists and socialists included.
It is actually insane to state there is any form of loyalty among liberals historically or today. Within a few years of America's founding, the liberal facade shattered into political factions that have only become more and more polarized and fractured. It's really just nonsense to say what you said. It's also super arrogant to state marxist circles actually read things when here on lemmy the "marxists" constantly spread some of the fakest news you can find and ban each other on their instances for disloyalty or stating alternative opinions.
Trump's foreign policies and all of his policies have nothing to do with the US agenda or historic goals.
Also this comic is taking arguably the most complex thing on this planet, international relations/history and framing it on a freakin' seesaw, some delicate things are going to be lost in translation. That's literally the point of political cartoons, to take super hard to define topics and basically make them into caricatures for people to laugh at and get a small grasp of the bigger picture.