Seriously?
Are you really asking why the world didn't apply sanctions to the US when the US went on global hegemony enforcement trips at a time when the US had global hegemony? The answer is because the US had global hegemony. Underneath you are also asking why didn't the Russias, Chinas and Irans sanction the US, but seem to be directing the question angrily at the west.
I think you underestimate how the geopolitical stage has shifted a lot in 20 years. Militaries and economies are stronger than they used to be and the US doesn't have that global power anymore.
Check this economic graphic out. Putin knows it and is pushing testing it, but Russia has limited global military and economic influence but for nihilism with natural resources. As opponents the US and Europe are applying economic sanctions but these do not include anything related to energy, so Russia will still continue to provide, at least for the time being, oil and gas to Europe until it wants to use it as a weapon. The important point here is that no matter who you are or who you hate you don't shit in your own shoes, and that's why the world didn't cause a fuss over Iraq and Afghanistan.
Turkey are in NATO but they aren't applying sanctions. Their economy is in a poor state but they fear invasions from all around so NATO is a convenience for now. If the EU gets its military, if NATO collapses, if China decides to go offensive globally, WW3 could be really exciting. For now China is quietly continuing to build on it's global military reach whilst facing an economic battle, and along with Iran, Pakistan and a lot of uninvolved countries are not interested in applying sanctions as they no longer feel threatened by the US.
Saudi Arabia are allies of the west, the Houthis are allied to Iran who are actually under western sanctions. It's a proxy war, it's not nice at all for civilians. Do you want the west to get involved more or do you just want to blame them? Are there Russian or Chinese sanctions? I'm not aware of them. The UAE are also involved in occupying Yemen, they control Socotra and are also interested in having military strength in the region, one of many nations with bases up the Red Sea.
As for Ukraine, I agree with you there has been interference from both sides over recent decades. That's the nature of the geopolitical beast. Same with how Moldova and Georgia are suddenly apparently interested in joining the EU in the space of one week. Sorry friends who believe the EU is the free world with no evil, this hasn't happened organically.
Cuban missile crisis is ancient history, let that go, also looks like Serbia has sided with the west now.
So in answer to your question there used to be one world power, now there are very many and more trying to be one. All that said, probably better to go read books by experts on the matter or find better sources on the state of the world in which you live then argue with emotion back and forth on motorsport forums.
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