European fears about the U.S. pulling its troops from the continent have been brewing for some time, with the head of the Munich Security Conference, Christoph Heusgen, saying: "The U.S. will likely ...

Only Donald Trump can make the call to launch U.S. nuclear-armed ICBMs. Our reporter visits the subterranean world of the ...

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Since the dawn of warfare, commanders have looked for ways to increase the speed and range of their ability to find enemy ...