trump will possibly continue investing on hypersonic glide weapons and do some threats as usual against Iran.
en.wikipedia.org
But despite what the president says, it's hardly the fastest hypersonic weapon in existence.
www.popularmechanics.com
some tests failed but the tests will contiune to equip their ships and bomber planes with that.
The missile's latest test could be its last, as the Air Force remains uncertain about its future after mixed results.
www.businessinsider.com
Assuming the glide vehicles cannot be hit by current means one option is to counter the platforms like attacking ships or B52 bombers with long range kamikaze(anti ship) or air to air drones(Karrar etc.)
Another option is to invest on lasers, combining lasers to take down hypersonic threats but this technology is still in development stage. It would only work for point defense though because of short range for lasers.
Another thing that I found is this example.
Scientists and engineers at Picatinny Arsenal, N.J., are busy developing a device that will shoot lightning bolts down laser beams to destroy its target. Soldiers and science fiction fans, you're welcome.
www.army.mil
Basicly a laser in impulse high power mode instantly ionises the air in the direction to fire. Continious laser focuses on a point and gradually heats it up but it is not powerful enough to ionise the air. Pulsed laser can generate much more power but for a very short time as mentioned below in the article above.
""If a laser puts out a pulse with modest energy, but the time is incredibly tiny, the power can be huge," Fischer continued. "During the duration of the laser pulse, it can be putting out more power than a large city needs, but the pulse only lasts for two-trillionths of a second.""
After that almost simultaneously electric charge zaps through the ionised air particles. Something like a tesla coil in rts games but directed by laser ionisation of air and getting real life results.
This would work in short ranges for point defense as well. Both lasers and zapping example above are not for long range area defense but can still work for defending points against hypersonic threats.