The European Union will have to commit to buying $350 billion of American energy to get a reprieve from Donald Trump's sweeping tariffs, the U.S. president said late Monday, dismissing Brussels' offer of "zero-for-zero" tariffs on cars and industrial goods.

Trump's comments at a White House press conference were in response to European Commission President Ursula von der Leyen saying earlier Monday that the EU had offered to drop the bloc's tariffs to zero on cars and industrial goods imported from the U.S. if Trump reciprocated.

Asked by a reporter whether the offer was enough for him to back down, Trump said: "No, it's not."