US Treasury Secretary Mnuchin wants China to completely stop buy oil from Iran (or else)

I posted comments from Mnuchin earlier (from his interview ith Fox):

• US Treas Sec Mnuchin comments on China, Iran and his US GDP outlook

and:

• More on Mnuchin's comments - Phase 1 trade deal with China was not changed in translation

He also elaborated in Iran/China/oil:

• We've cut off probably over 95% of the oil revenues, so there's a very small amount of oil revenues, and you're right, a component of that, a big component of that is China... we're working closely with them to make sure that they cease all additional oil activities.
• China is subject to sanctions just like everybody else
• The Europeans are adhering to our primary sanctions

Oil is not much changed, its only been open for a few hours for week so far: