The global elites have been planning WW3 since the day WW2 ended. WW3 is part of their "end game" - to kill 1/2 the population, to usher in global government and the one-world religion under the anti-christ. Go look up Albert Pike's plan for the 3 world wars and what he wanted out of each.
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North Korea has been controlled by the deep state/c1a for decades. It's been used as an excuse for the US to spend trillions of $ on "military spending" (which much of that was stolen) and also as an excuse to coerce other nations to join anti-nuke treaties in an effort for world peace. Basically, north korea is used an excuse so that the US can have a military presence in asia/europe, which gives them an opportunity to "poke the bear" of russia, who is the planned enemy for WW3.
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Trump liberated N Korea from the deep state and is trying to neutralize this threat. Trump is also trying to be friends with Putin, even though the deep state is trying to start WW3 through multiple means (i.e. they continue to "poke the bear"): 1) skirmishes in Syria, which threaten russian oil pipelines. 2) skirmishes in Iran, which threaten one of russia's top allies. 3) the multi-decade buildup of NATO, which has expanded from a simple defense of europe into a surrounding/threatening army at much of russia's border. 4) the deep state overthrow of ukraine's govt a few years back, from a pro-russia govt into a pro-west goverment was the main reason that russia "invaded" ukraine (the country was in chaos after the West got involved, and russia liberated their people, who wanted to be allied with russia, not the US).
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There's lots more to all of this. This is why the media hates that putin/trump are working together. We can only hope they are trying to avoid WW3.