Start by recognizing where ISIS came from. The U.S. and its junior partners destroyed Iraq, left a sectarian division, poverty, desperation, and an illegitimate government in Baghdad that did not represent Sunnis or other groups. Then the U.S. armed and trained ISIS and allied groups in Syria, while continuing to prop up the Baghdad government, providing Hellfire missiles with which to attack Iraqis in Fallujah and elsewhere.
ISIS has religious adherents but also opportunistic supporters who see it as the force resisting an unwanted rule from Baghdad and who increasingly see it as resisting the United States. It is in possession of U.S. weaponry provided directly to it in Syria and siezed from the Iraqi government. At last count by the U.S. government, 79% of weapons transfered to Middle Eastern governments come from the United States, not counting transfers to groups like ISIS, and not counting weapons in the possession of the United States.
So, the first thing to do differently going forward: stop bombing nations into ruins, and stop shipping weapons into the area you've left in chaos. Libya is of course another example of the disasters that U.S. wars leave behind them -- a war, by the way, with U.S. weapons used on boith sides, and a war launched on the pretext of a claim well documented to have been false that Gadaffi was threatening to massacre civilians.
So, here's the next thing to do: be very sceptical of humanitarian claims. The U.S. bombing around Erbil to protect Kurdish and U.S. oil interests was initially justified as bombing to protect people on a mountain. But most of those people on the mountain were in no need of rescue, and that justification has now been set aside, just as Benghazi was. Recall also that Obama was forced to withdraw U.S. troops from Iraq when he couldn't get the Iraqi government to give them immunity for crimes they commit. He has now obtained that immunity and back in they go, the crimes preceding them in the form of 500 pound bombs.
While trying to rescue hostages and discovering an empty house, and racing to a mountain to save 30,000 people but finding 3,000 and most of those not wanting to leave, the U.S. claims to know exactly whom the 500-pound bombs are killing. But whoever they are killing, they are generating more enemies, and they are building support for ISIS, not diminishing it. So, now the U.S. finds itself on the opposite side of the war in Syria, so what does it do? Flip sides! Now the great moral imperative is not to bomb Assad but to bomb in defense of Assad, the only consistent point being that "something must be done" and the only conceivable something is to pick some party and bomb it.
But why is that the only conceivable thing to be done? I can think of some others:
1. Apologize for brutalizing the leader of ISIS in Abu Ghraib and to every other prisoner victimized under U.S. occupation.
2. Apologize for destroying the nation of Iraq and to every family there.
3. Begin making restitution by delivering aid (not "military aid" but actual aid, food, medicine) to the entire nation of Iraq.
4. Apologize for role in war in Syria.
5. Begin making restitution by delivering actual aid to Syria.
6. Announce a commitment not to provide weapons to Iraq or Syria or Israel or Jordan or Egypt or Bahrain or any other nation anywhere on earth and to begin withdrawing U.S. troops from foreign territories and seas, including Afghanistan. (The U.S. Coast Guard in the Persian Gulf has clearly forgotten where the coast of the U.S. is!)
7. Announce a commitment to invest heavily in solar, wind, and other green energy and to provide the same to democratic representative governments.
8. Begin providing Iran with free wind and solar technologies -- at much lower cost of course than what it is costing the U.S. and Israel to threaten Iran over a nonexistent nuclear weapons program.
9. End economic sanctions.
10. Send diplomats to Baghdad and Damascus to negotiate aid and to encourage serious reforms.
11. Send journalists, aid workers, peaceworkers, human shields, and negotiators into crisis zones, understanding that this means risking lives, but fewer lives than further militarization risks.
12. Empower people with agricultural assistance, education, cameras, and internet access.
13. Launch a communications campaign in the United States to replace military recruitment campaigns, focused on building sympathy and desire to serve as critical aid workers, persuading doctors and engineers to volunteer their time to travel to and visit these areas of crisis.
14. Work through the United Nations on all of this.
15. Sign the United States on to the International Criminal Court and voluntarily propose the prosecution of top U.S. officials of this and the preceding regimes for their crimes.