While Trump has put a whole mess of entities on sanctions, he's hardly the first US president that does it. In fact, I think in the last couple of decades the US's understanding of sanctions is like something out of a video game. It's literally like they're playing a badly designed strategy game where if you have more money than your opponent you will never lose so they figure that since US wields unrivaled economic power due to being the reserve currency of the world, that means it's auto-win with no cost incurred.
Of course, North Korea's been under sanctions forever through multiple administrations and sure haven't capitulated. The fact is that real life is not a strategy game where you just have more research beakers or gold coins and win. At some point you've to be willing to fight and how much tolerance the population have for war and hardship has a huge factor. If economy is everything, Russia has less GDP than Germany or France so it should be cake for EU to handle the Russian threat, except that isn't how reality works. For all this bashing about Trump erodes US credibility, I think it's actually pretty dumb because that assumes the rest of the leaders of the world somehow couldn't tell that Trump is an outlier, as if anyone but Trump gets elected and then makes some generic statement people will be like 'but what if this guy is another Trump?' What may actually erode US's credibility is all the administration's willingness to use sanctions as some kind of game that is actually not very effective (nobody ever capitulated without military defeat unless you're willing to starve everyone to death, which probably isn't happening in the modern era) and maybe at some point people got tired of US forcing everyone to go along with anybody they happened to sanction. Yes EU and China all have their problems as a replacement world economic power but there's a limit to how long people can put up with this, especially given US is likely no longer going to be the sole superpower and certainly not the sole economic superpower.
Of course, North Korea's been under sanctions forever through multiple administrations and sure haven't capitulated. The fact is that real life is not a strategy game where you just have more research beakers or gold coins and win. At some point you've to be willing to fight and how much tolerance the population have for war and hardship has a huge factor. If economy is everything, Russia has less GDP than Germany or France so it should be cake for EU to handle the Russian threat, except that isn't how reality works. For all this bashing about Trump erodes US credibility, I think it's actually pretty dumb because that assumes the rest of the leaders of the world somehow couldn't tell that Trump is an outlier, as if anyone but Trump gets elected and then makes some generic statement people will be like 'but what if this guy is another Trump?' What may actually erode US's credibility is all the administration's willingness to use sanctions as some kind of game that is actually not very effective (nobody ever capitulated without military defeat unless you're willing to starve everyone to death, which probably isn't happening in the modern era) and maybe at some point people got tired of US forcing everyone to go along with anybody they happened to sanction. Yes EU and China all have their problems as a replacement world economic power but there's a limit to how long people can put up with this, especially given US is likely no longer going to be the sole superpower and certainly not the sole economic superpower.