President Trump said "we'll see" in response to a reporter's question about whether he'll attack North Korea. Trump is meeting with Defense Secretary James Mattis, Chief of Staff John Kelly and others today to discuss next steps with North Korea.

He also threatened to stop "all trade with any country doing business with North Korea," a threat apparently aimed at China. Reality check: The U.S. traded $578 billion in goods with China last year.

Go deeper: The cycle of escalation with North Korea