Good Friday. On the agenda: Market futures are down this morning, indicating another bad day for stocks after President Trump’s latest trade threats. (Was this email forwarded to you? Sign up here.)

Peter Thiel says Google’s China work is bad for America

As the Trump administration moved to extend its trade war with Beijing, the tech billionaire doubled down on his claim that Google is arming one of America’s biggest rivals.

Artificial intelligence is a military technology, Mr. Thiel writes in an NYT Op-Ed, arguing that it can help a country “gain an intelligence advantage, for example, or to penetrate defenses in the relatively new theater of cyberwarfare.”

He questions Google’s priorities, pointing to the company’s decision to open an A.I. lab in China while ending its work for the Pentagon (a move prompted by employee protests, we should note). “Perhaps the most charitable word for these twin decisions would be to call them naïve,” Mr. Thiel writes.