I think u/CrazyRussian might be onto something. His theory: Merge all countries with ethnic similarities into one country. With very few countries, global rule is easier. For each cultural-ethnic region, there is only one government to puppeteer instead of multiple as there is now.

Will have to happen gradually of course: we're starting from a unipolar world, next must be a bipolar world, then tripolar and so on until there is one pole for each designated cultural-ethnic region.

Final outcome perhaps something like this (see the map) a multi-polar world with a handful of superstates, and a bunch of disputed territories in the middle: https://en.wikipedia.org/wiki/Political_geography_of_Nineteen_Eighty-Four

Not only Poland but whole of Eastern Europe goes with Russia. Western Europe under America-Anglo empire etc. Within each pole, continue with cultural homogenization to make sub-ethnicities and sub-cultures similar enough to be merged for takeover/common rule.

Implication: No more World Wars, but lots of regional wars. It so happens the ones that will be consumed as per this theory also have no nukes (see map): https://en.wikipedia.org/wiki/List_of_states_with_nuclear_weapons The nukes in Belgium, Germany, Italy, the Netherlands, Turkey are under US control as per the last link.

NK might've thrown a wrench into the plan by acquiring nukes. Libya tried but got destroyed. Iran is trying and might get destroyed.