Yes, so long as the ATACMs holdup is that reason, then US air launched missiles are also off the table.

But that’s why Storm Shadow is interesting as it’s not requiring US approval (formally). Rumor has it they are trying to adapt it to Su-24

The most useful missiles would be air launched cruise missiles like JASSM or Storm Shadow (SCALP). Those can be launched from F-16 or Mirage/Tornado respectively. The planes would just be the launch platforms for the missiles. Without those, missiles would need to be shorter range ballistic (ATACMs) or ground launched cruise missiles which are harder to come by.

And so long as Russia can attack Ukraine from the safety of Russia indefinitely, how can Ukraine be safe?

Ukraine needs the tools to hit Russia on every inch of Ukraine and some ability to attack the launch sites for long range attacks. The problem here is I doubt many western countries would like to donate cruise missiles with their flag on them that hit Russian bombers at an air base near Moscow. That fear I understand. The ATACMs fear not so much.

My mother in law gave me a 1000 pc jigsaw puzzle just like this.