“Is there a solution to fanatical religious warfare?”
It appears there is, like we did with ISIS. Unfortunately it is a costly and destructive process.
Your frustration is warranted.
Radical Islam has 150 Million adherents (10% of Muslims). It is now spreading in the vast African continent. Every middle-east country except perhaps Israel has jihadi cells. And in UK, France, Belgium, Philippines, Pakistan, Indonesia, Malaysia, Bangladesh, as well.
I know 911 was pre-invasion of Iraq. But 911 was not organized in Iraq. It was strictly in Afghanistan. There was no urgent need to invade Iraq which Bush-43 foolishly did. Saddam & other DICTATORS in middle-east were keeping radical Muslims under control. Bush-43 began the destabilization, and Obama finished the job with Egypt & Libya.