[FreakyT]

> if it becomes possible in the future to intercept ICBMs during the launch phase using some kind of new technology

This was largely the concept of the Strategic Defense Initiative (aka Star Wars) in the 1980s: https://en.wikipedia.org/wiki/Strategic_Defense_Initiative

[tutfbhuf]

> In 2019, space-based interceptor development resumed for the first time in 25 years

It seems as though the program has been resumed lately.