https://www.popularmechanics.com/military/weapons/a25938090/star-wars-light-trump-missile-defense/Finally, the big one: space-based missile defense, first proposed in the 1980s under the Strategic Defense Initiative. According to the report, the Pentagon “will study development and fielding of a space-based missile intercept layer capable of boost-phase defense.” These defenses would be satellites armed with interceptor rockets or, down the road, lasers. Pointed at down at the Earth, they would be alerted by a network of sensors to missile launches and swiftly knock down missiles before those missiles could release their warheads.
This, too, faces many complications. First, the U.S. would need to develop and maintain a constellation of missile-sensing interceptor sats in low Earth orbit. Developing, building, and launching this constellation would be very expensive at a time when the defense budget is expected to remain flat or even drop in the near future, meaning the Department of Defense would need to cut other programs to fund it.
Adversaries could simply build more missiles to overwhelm this expensive system, or develop other weapons such as cruise missiles or hypersonic weapons. And more fundamentally, there's the issue of breaking the informal taboo on militarizing space. It could come back to haunt the U.S. as other countries also deploy orbital weapons.
North Korea detonated a nuclear device in 2017 equivalent to about 250 kilotons of TNT, a new study estimates, creating an explosion 16 times the size of the bomb the United States detonated over Hiroshima, Japan, in 1945. The new assessment of the 2017 explosion's size is on the high end of previous estimate ranges.
The 2017 test was an order of magnitude larger than the previous five underground tests at North Korea's Punggye-ri test site, according to the new study in AGU's Journal of Geophysical Research: Solid Earth. The new study took into account the geology of the test site to estimate the size of the explosions from distant seismic recordings of the blasts.
House Democrats don’t want to fund variable-yield nukes. The new chairman just explained why.www.defenseone.com
"The House bill also strips out money for studies into next-generation missile interception concepts, such as space-based lasers and particle beams to destroy missiles on the launch pad. The Pentagon is hoping to study the concepts but Smith said that no missile defense technology would “stop sophisticated missiles from coming in” — and therefore, he has no interest in funding them and that is why strengthening conventional deterrence was so important. "
How do these house hot airs get a say? If ever there was someone who liked to hear himself bloviate,