Who conducted a sneak attack on the U.S. dollar this week?

It began with a thinly sourced but highly explosive report Monday in a British newspaper: Arab oil sheiks are conspiring with the Russian's and Chinese to quit using the dollar to set the value of oil trades — a direct threat to the global supremacy of the greenback investors aren’t feeling as secure about the dollar as they used to. I say they need to keep a close watch on this because there is no say what this may lead into and could possibly affect the u.s