Donald Trump’s war against the world now includes Apple.

“What I think you ought to do is boycott Apple until such time as they give that security number,” he told a rally in South Carolina, referring to Apple’s refusal give the government access to information on the phone of one of the shooters in the San Bernardino terrorist attack. “How do you like, I just thought of that,” he added. 

He later tweeted that he would switch to Samsung if Apple didn’t come through.

In a letter to customers earlier this week, CEO Tim Cook explained how giving the government that access would essentially create a backdoor that would undermine the security of every iPhone.

For those keeping score, in the past week alone Trump has taken on George W. Bush, the Pope, half a dozen presidential candidates, and now Apple.