When people discuss that troublesome region known as "The Middle East", one common debate is whether to pursue a "One State Solution" or a "Two State Solution" for the troublemakers of both sides.
Those plans are both wrong because the only sustainable solution is the No State Solution: No one gets to govern their neighbors or their enemies. States are the problem.
Will this result in regional peace? No, because the people in that area don't want peace. If they did, peace would be easily attainable.
What it does is return aggression to a private matter between individuals. It removes any veil of legitimacy from either side in the conflict. Aggressors are just aggressors, with no justification.
If you, as an individual, wish to send your money or weapons to anyone over there, at your own expense, you should be free to do so. It is within your rights.
If you wish to buy a ticket and go there to fight against individuals you dislike, I'm not going to stop you. You may be the aggressor or the defender, but that's on you. No governments or political criminals, anywhere, for you to shift the blame to. Which is how I already see it anyway.
I'm in need of some donations.