The conflict between the USA and Iran in the Middle East which has now flared hot again is a conflict between two imperialisms.
They are two different sorts of imperialism. The USA is a world power, Iran, a regional power.
The sway of the Iranian state over the oppressed nations within its own borders (Kurds, Azerbaijanis, Baluchis, etc.) is directly political and military.
Its less direct sway in Iraq, Syria, Lebanon, Gaza, etc. is also politico-military. Being much less strong economically than US capital, Iranian capital has to rely on such politico-military methods.
The USA, for decades