This morning’s tweet is the third time this week that President Trump has suggested that the U.S. is ready to strike North Korea, although his comment does not necessarily indicate a specific change in military readiness or imminent action.

South Korea said today that the White House had agreed not to do anything on the Korean Peninsula that could catch Seoul off guard.

Here are the key moments from a week of escalating tensions.

Our reporters in Washington examined the options available to the Trump administration as it tries to defang Pyongyang’s missile programs without risking all-out war.