Ephesians 6:12 We wrestle/fight not against flesh and blood but against principalities, powers, the rulers of the darkness of this world, against spiritual wickedness in high places.
That doesn't mean that the "kings and rulers of this earth" are not part of spiritual warfare.
Ephesians 2:2 Satan is the prince of the power of the air, the spirit that is right now working in the children of disobedience.
That word "worketh" "working" is the Greek word 'energeo' where we get our words 'energy' or 'energized.' So satan is energizing the "children of disobedience." That is every unconverted person, whether it be the dope addict in a ghetto alleyway or the king/potentate/president of any country.
A lot of the conspiracy theories that I am familiar with focus on the presidents, kings/queens, politicians, etc. But I am more concerned about the "influence peddlers" such as musicians, actors/actresses, and other celebrities that masses of people idolize and seem to "foam at the mouth over." Because those along with political rulers, are the ones whom satan is using to influence "the course of this world" (Ephesians 2:2) or 'direct the contemporary age in which we live.' When we were all unsaved we "walked" or 'lived our lives' "according to the course of this world." Which means that we conducted ourselves by the instruction or counsel of the contemporary age in which we live, which was all under the counsel/influence of satan.
I'm not one of those, "We should ban all rock music (or insert whatever genre of music/entertainment you think is worst) and only listen to psalms, hymns, and spiritual songs" type people. But we do need to recognize that if the entertainment or information we take in doesn't exalt Jesus Christ, is is "ungodly counsel" being propagated by someone being energized by satan to push our contemporary generation away from God. So we must not model our lives after that ungodly counsel: "blessed is the man that walketh not in the counsel of the ungodly." Psalm 1:1