That's Trump's plan. If they would just cooperate, both countries would get very rich.
Most, if not all the rare earth metals are along the eastern front between Ukraine and Russia. Having American engineers, miners, and businessmen all over that area would serve as a great buffer for both countries.
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You forgot the Iranian debacle, ( I was next door), Bell, Lockheed, and a handful of US companies were busy supporting the Shah’s military when the Islamists suddenly took over, resulting in a U.S. hostage crisis and the failed rescue attempt, almost sparking yet another war.
President Trump is not President Regan and Russia is not Iran.
We need no boots on the ground—we can watch the borders from Space. Drones can watch and so can high flying aircraft.