What is to be done with ISIS returnees? America's allies and partners have grappled with this question for more than a year now, ever since the Islamic State's self-declared caliphate in Iraq and Syria began to crumble. But the issue has become more acute in recent days as a result of American policy.
As the contemporary terrorist threat changes, it is being amplified by new technologies that give those actors greater reach and impact than ever before.
Russia’s ongoing development of hypersonic weapons proves nuclear weapons are in fact warfighting weapons — contrary to conventional wisdom in the West.
Moscow’s equivalent of DARPA wants a cold-weather drone that can stay aloft for four days.