Iran denies Trump's claims: 'We reject all negotiations – US has failed and Hormuz will remain closed' https://www.ynetnews.com/article/0t2zpd7dr
And Brent futures are starting to climb up again fast.
Trump's post is either him freaking out of a Black Monday and/or losing military command, or it can be interpreted as market manipulation. But I don't think he is much in control anymore.