US troops must prepare to fight around the moon, Trump’s top military adviser says

American troops need to prepare for combat not only in Earth’s orbit but around the moon, President Donald Trump’s top military adviser said on Wednesday, looking ahead to a new frontier in warfare after the US revealed for the first time that it has deployed weapons in space.

General Dan Caine, chairman of the Joint Chiefs of Staff, told service members and industry figures at the Air, Space and Cyber Conference outside Washington that the US military should adapt now so it “is prepared to...