�y��vlog

It could also conduct a banned launch of a long-range rocket to put a spy satellite into orbit or test-fly missiles over Japan, experts say.

Universal Hydrogen plans to test-fly a hydrogen-powered regional airplane next year, "hopefully well before the end of the year," Eremenko added.

As the U.S. military and defense contractors eye a potential drone war with Iran as tensions with the country remain elevated, the defense industry is also preparing to test-fly domestic versions of its combat drones over major American cities in an effort to fully integrate military-grade drones into civil airspace alongside commercial air traffic in the coming years.

The Poway-based defense contractor General Atomics Aeronautical Systems, Inc., will test-fly its SkyGuardian drone, outfitted with a 79-foot wingspan and advanced surveillance capabilities of more than 2,000 feet, over San Diego, California, sometime this year.

The version the company intends to test-fly will not be weaponized, although the company advertises a weaponized version on its website.