President Donald Trump sat down with CBS News' John Dickerson for an interview on his 100th day in office.
DICKERSON: Mr. President, you and the administration said to North Korea, Don't test a missile.
They have tested a missile. Is the pressure not working?
TRUMP: Well, I didn't say, don't test a missile.
He's going to have to do what he has to do. But he understands we're not going to be very happy. And I will tell you, a man that I've gotten to like and respect, the president of China, President Xi, I believe, has been putting pressure on him also.
But, so far, perhaps nothing's happened. And perhaps it has. This was a small missile. This was not a big missile. This was not a nuclear test, which he was expected to do three days ago. We'll see what happens.
DICKERSON: You say, not happy. What does that mean?
TRUMP: I would not be happy. If he does a nuclear test, I will not be happy. And I can tell you also, I don't believe that the president of China, who is a very respected man, will be happy either.
DICKERSON: Not happy mean military action?
TRUMP: I don't know. I mean, we'll see.
DICKERSON: The Chinese, our allies, have been allies with North Korea. How are you sure that they're not using this as a way to test you?
TRUMP: You can never be sure of anything, can you?
Watch Trump's full interview: