Former Defense Secretary Mark Esper discusses stalled U.S.-Iran negotiations and the potential use of a hypersonic weapon as tensions escalate on ‘Fox News Live.’ #fox #media #breakingnews #us #usa #new #news #breaking #foxnews #military #defense #iran #war #hypersonic #missile #weapons #pentagon #nationalsecurity #foreignpolicy #markesper #esper #conflict #middleeast #technology #strategy #geopolitics #security #global #tensions Don’t just watch Fox News—be part of it. Become a Fox News