India’s test of a anti-satellite missile has created at least 400 pieces of orbital debris, only 60 of which are large enough to track and many going above the orbit of the International Space Station, placing the station and astronauts at risk, as well as creating massive new risks for ordinary space activities.
A Comprehensive Space Weapon Test Ban Treaty is needed, that would immediately ban the placement and testing of any future weapons in space and ban the testing of weapons already present.
Space junk is already a major problem incident to ordinary uses of space, for example, dead satellites and dead booster stages. To an extent, that is unavoidable.
But we CAN stop the deliberate endangerment of astronauts and space commerce (and frankly Earth commerce that depends on satellites) by enacting this treaty.
The existing Space Treaty unfortunately does not cover this particular kind of testing, so a new treaty that supplements the existing Space Treaty is needed.