Over the weekend, as Elon Musk launched into a barrage of social media posts criticizing one of the lead White House advisers for President Donald Trump’s aggressive tariff plan, Musk was going over that same official’s head — and making personal appeals to Trump.

In the most public break from the Trump administration since taking office, The Washington Post reported Monday, Musk openly disagreed with Trump’s decision to slap tariffs on a host of countries as the “first buddy” and Trump’s trade adviser, Peter Navarro, took shots at one another over the issue.

Investors are bracing for an international trade war.Monday's post — which shows Friedman holding a seemingly simple pencil and celebrating its complicated, cross-continental production — builds on a pattern of pointed statements from Musk,