Perhaps people outside the USA should also get involved and put pressure on the USA.

Yeah. But also don't forget to make something against it on your OWN.
It's not only a country. It's the people also.

Don't use your car, use more public transportation.
Don't buy products from to far away if not necessary.
Don't waste to much electricity in your house.
Be very economical. Re-use things instead of throw them away.
Try to live without using to much resources. It's also a good way to train your spirit for buddhism

That's more important to put pressure on a War-Country.