How is the new friend who borrowed the money initially, going to benefit from it long term, if they are held captive, and possibly killed because the ransom isn't paid? Sure they paid off their small debt, but if they end up dead now because you didn't help, should you have even bothered to help in the first place?
How are the Kurds going to benefit from the initial help from their 'friend' the U.S, if they can't keep ISIS imprisoned, and possibly are killed by the Turks? Sure the U.S. helped defeat ISIS and kept the Turks at bay, but would the Kurds ever have been able to handle things on their own, and if not, then should the U.S. have bothered to help in the first place, and why won't anyone else help?
Even if you want to change the scenario, and say that somehow the person does get their money back, what does that matter? The new friend is in trouble now and needs help. If they don't help their new friend, and they pay the price because of it, does that mean they're a bad person? Does that mean they are the only one to blame, even though there are others who could help, who don't want them to get hurt, but may not help, because reasons? Aren't they at the very least, equally to blame if they don't help?
If the answer is, 'no, it's the new friends fault period', then all you're doing is teaching people to be selfish, because the moral of the story wouldn't be 'always keep helping someone once you've started helping them', because that would be ridiculous, it would be, 'don't bother helping anyone in the first place, because eventually you're going to get blamed for whatever happens to them that you can't or won't help solve'. Maybe that's why nobody else wants to show up and help?
Are friends always forever? Is marriage always forever? Do more people today have stronger longer lasting friendships and marriages? When those things end, do bad things happen to either person after the fact? Who's to blame for that?
How long do the Kurds have to become capable enough to completely protect themselves without issue in the future whatsoever?
If the U.S. kept backing the Kurds until they were a force to be reckoned with, if the Kurds later decide to mow through Turkey, since the U.S. is their ally and 'friend', should the U.S. go along with it? What if it's not just Turkey? What if the tide turned and the Turks got the upper hand and wanted revenge which led to a similar scenario like what's happening now? Should the U.S. ally 'friends' come to the Kurds rescue?
It's not that simple, no matter how you slice it.
The key in all of this is stop with the metaphorical BS and just state what you think. Each person is going to intrepid these so called stories differently and most times they are so far removed from the topic to be worthless. Most of your stories have way to many holes to them, do not portray the situation properly and are a complete mess.
With that said only your last paragraph seems to really touch on your opinion instead of all this friend crap. To answer that last paragraph, that is the responsibility the US took on when it made allies of the Kurds. If Trump was going to stab them in the back, abandon them to slaughter then he should have broke down all relations with them when he came into office. Instead, he continued to use them, took credit for their efforts on the ground in stabilizing the region over ISSIS and when things was looking good, knowing what Turkey had in mind decided to let GOD sort out their predicament.
The thing is this has been Trump MO before being President. You only have to do just a little digging to find out this has been his way of doing business for decades. He has done this with partners, contractors you name it and now he does it in the POTUS office. The sad part is that you are so adamant in defending everything that he does, you will defend him on this betrayal. Is this the person you have become where you will accept betrayal as if it's just another day, lowering yourself to finding a way to defend what would be considered no matter where you are at an act of treachery.
I wonder, what was your stance when Trump stated Obama created ISIS when he removed troops out of Iraq.
You are right the situation is not simple but what did the US get out of it. Nothing, we got a distablized region, nothing from Turkey or any measures for our allies. We allowed Asad and Russia to come in and we allowed ISIS a lifeline back into the line light. There was absolutely nothing we gained from this situation but chaos and another bad rep.