Japan threatens to shoot down any North Korean missile that enters its territory

North Korea's satellite launch is a dangerous provocation that cannot be allowed to proceed. A working spy satellite would strengthen Pyongyang's ability to conduct a pre-emptive strike as well as monitor potential incoming threats from the US and South Korea.
North Korea's satellite program is simply defensive in nature. Pyongyang has a right to exercise its sovereignty and justifiable self-defense in response to the confrontational moves made by Washington and Seoul. A successful launch will help defend North Korea against future attacks by the hegemonic US and South Korea.
There's a 72% chance that Japan Self-Defense Forces will have tested a Tomahawk missile by mid-2027, according to the Metaculus prediction community.