A few examples of the USA abusing pawns allies:
"Hey Australia, go ahead and get in a trade spat with China. The USA has your back!" (US promptly sells more coal to China.)
"Hey France, how DARE you sell submarines to another ally without cutting the USA in on the deal!
Hey Australia, you REALLY should be buying subs from us, not France. Scomo, sit up and beg to take the deal. That's right. Who's a good doggy. Yes, Scomo's such a good doggie. Now roll over and we'll pet you."
"Hey Afghans who helped the USA. We're leaving in the middle of the night to avoid pictures of you hanging off the skids of one of our evacuation helicopters (that was terribly embarrassing). It's SO secret that your troops outside the base only found out after others broke in, released prisoners we'd abandoned, and did some looting.
We spent 20 years "nation building" to support your puppet government. As a final show of support, we decided to drone strike a foreign aid worker and some children and claim they were terrorists. That should make it easier for you to keep your people afraid of you. All that and then you ungrateful bastards lost control so fast that other countries couldn't get all of their people out before the government we threw out and spent 20 years dropping bombs all over your country to suppress came and threw you out.
Oh, and we're really upset that some of you hung onto the outside of airplanes and fell to your deaths. Do you have any idea how bad that looked in the press? Just for that, we're freezing all your money and confiscating at least half of it. Good luck feeding your people."
"Hey NATO, even though you are all on schedule complying with our requirement request to increase your military budgets, one of your leaders offended our leader, so we're going to move a bunch of hardware away from the offending country and park it where it will be less useful, but at least it will be in a place where the local leader didn't annoy us. We'll use Didn't meet final budget requirements 3 years before schedule as the excuse."
"Hey Canada and Mexico. You are our only neighbors and well trusted trade partners. Instead of sitting down and negotiating some reasonable adjustments to NAFTA, we're unilaterally cancelling it. If you want a new trade deal with us, come back and kneel on your side of the table."
"Hey Syrian Kurds. We counted on you for many things and know you've been counting on us, but we've decided that you're ready to fight alone. Best of luck!"
"Hey South Vietnam. We finally got a peace treaty signed. It even says that we SWEAR (and cross our hearts and hope we die if we break the promise) that we'll be back within 5 minutes if the North Vietnamese send even one soldier across the border. You know you can count on the USA to defend you no matter what happens.
Oh wait. We've decided that it's not worth the effort to help you any more. We're sure you can take care of your northern border.
WTF! We don't care that the entire North Vietnamese Army moved south and has entered your capital. Get your damned hands off of our embassy evacuation helicopter before someone takes a picture."
Enough examples? Nah, let's toss in a 19th century one just to show that the USA betrayal and abuse problem didn't originate in the 1960's or 70s.
"Hey Cherokee! Thanks SO much for helping my army win the war against the Creek. I solemnly pledge As long as the sun shines and the grass grows there shall be friendship between us, and the feet of the Cherokee shall be toward the East. at least until I'm elected president. Then I'll evict you from your remaining lands and send you on a long walk down the Trail of Tears. You and others like you will be safe west of the Mississippi, until we decide to take those lands and drive your people onto smaller and smaller reservations."