National Security Journal on MSN

In 2013, the X-51A Waverider proved America could build hypersonic weapons — then the US stopped, and Russia and China caught up

On May 1, 2013, Boeing’s X-51A Waverider was dropped from a B-52 Stratofortress over the Pacific Ocean, accelerated to Mach 4 ...
National Security Journal on MSN

At 11,400 mph, NASA’s X-43D could have crossed the Atlantic in 18 minutes — 20 years after cancellation, it still has never flown

NASA’s X-43D was designed to fly at Mach 15 — roughly 11,400 miles per hour, fast enough to cross the Atlantic Ocean in 18 ...

Iran’s ‘mosquito fleet’ means its battered navy still has bite

Iran’s conventional navy warships might be largely destroyed, but analysts say that’s never where its true sea power lay.