Agree - the power to open markets, guarentee acccess and obtain resources is what underpins it. As the Russians are showing us, no one else has a fraction of that capability.
whether we like it or not the us ability to carry on unchallanged has noticably diminished in comparison to the period from 1990 to 2010
also ... if ukraine-russia conflict is showing us anything it is that the natural resources question is far from certain. if we are to learn from history we would hastily take note that it is the question of resources that brought about the first world war
its a massive investment and if you look at it this way you have to ask, is ukraine such a sure bet and what are the consequences of that investment going south. and the failure to ask these questions is indicative that too many people see the usd as being in unlimited supply, which by itself devalues the usd
Nothing is a sure bet but leaving Russian aggression unchecked destabilizes the region. The world counts on the US to maintain the peace and status quo. As long as there's still confidence in that, the US currency will continue being the world's reserve currency along with all the benefits that come with that.