The countries in the Middle East took inspiration from the United Arab Emirates and, well, united. They formed the Fifth Caliphate. After some industrial sabotage took out the competition (all of Russia's oil refineries and pipelines mysteriously caught on fire or blew up within a week: since no one claimed responsibility, the Russians assumed it was Ukraine), the Fifth Caliphate used the power of petroleum and some strategic partnering with countries such as Venezuela to eliminate all other powerful organizations or governments on the planet, leaving all power in their hands -- specifically, the hands of their undisputed leader, the Sultana Khadija, who had achieved her position using similar tactics to the 18th-century Russian ruler the Tsarina Catherine the Great.
Khadija acted as a "benevolent dictatress" to the world, globally raising the living standards of the poor to a point where they didn't have to worry about the basics (but they didn't have much else.) She herself lived a life of luxury, including a harem of handsome men whose sole purpose in life was to sexually service her. She also had a harem of women for the same purpose, being bisexual, and the women and the men could pleasure each other when not servicing her. (One of the ways she would reward the men for a job well done was to let them make love to the women provided they gave the woman they were making love to at least one orgasm before cumming inside the woman's pussy. Of course, all the men and women in this role had been sterilized, so there was no chance of accidental pregnancies.) All the men and women in the harem were between ages 21 and 26: Khadija herself was pushing 40 but liked her lovers young. She had eliminated all threats to her position several years ago and had constant surveillance throughout the globe to eliminate any new threats before they could form. Not that any would: it's hard to foment revolution when the underclasses are content with their lot.
One afternoon, Khadija was feeling horny and in the mood for male action. She summoned three nude male slaves to her bed, where she was lying naked. Her lovely bronze skin covered more flesh than in her youth: her breasts had become D-cups, her frame was a bit thicker than when she was 18 and slender (though she was far from obese), and her once firm, tight butt was now a bit wider, a bit softer, and a bit more cushioned. All three of the men were slim and toned: their skin was the same bronze as hers, and their cocks were of average length and girth. She didn't want slaves who she needed two rulers to measure: that would be too long, giving her pain instead of pleasure.
She spread her legs enough for one of the men to get between them, and instructed him to first warm her up, then eat her out. The other two were to flank her and kiss and caress her plump breasts. The men got in position, and Khadija signaled them to start.