US President Donald Trump says he will hit movies made in foreign countries with 100% tariffs, as he ramps up trade disputes with nations around the world. Trump said he was authorising the US Department of Commerce and Trade Representative to start the process to impose the levy because America's movie industry was dying "a very fast death".

Trump, in an evening post on his social media platform Truth Social, said he has instructed the Commerce Department and US Trade Representative to place a 100% tariff on films that are produced outside the United States and imported into America.

Here are seven major questions left unanswered on Trump’s proposal: Trump only said he was “authorizing” the U.S. Trade Representative and the Commerce Department to impose a 100% tariff on foreign films. He didn’t say he would do it. With previous tariff threats, Trump has sometimes made good and sometimes backed off in the face of pressure.