One is that Russia is about to replace the USA as main global wheat exporter. Being an agricultural exporter may seem minor but it is an strategical way to make sure you hold the pan by the handle and that, of course, in case of crisis your state is self-sufficient to feed its own people and maybe also its allies. The USA knows it and that is why agriculture is over-protected, mega-subsidized and systematically exempt from foreign trade agreements. A few decades ago only the USA, Canada and Argentina were global grain exporters. This is changing fast.
The other one is that Iran is selling oil for euros, not dollars anymore. This is a direct attack against the dollar hegemony and to the ability of the imperial power to finance its own deficit, caused by consumerism and military costs. The US' imperial power heavily depends on the denomination of oil in dollars but sales of oil in US dollars have decayed to just 60% globally. The last one in the OPEC who tried to do that was Saddam Hussein, however Iran is a much bigger and better backed state and therefore invasion is not likely at all.