U.S. on alert for North Korea missile launch

There are signs Monday North Korea may be preparing to fire a long-range missile in the next few days as the tensions between the U.S. and the rogue communist nation continue to escalate.

The situation has forced the United states top commander in South Korea, General James Thurman to cancel a trip to Washington so he can monitor the ongoing confrontation.

The news comes as a new CNN poll shows 41 percent of Americans see North Korea as an immediate threat - that's up 13 percent in just three weeks.

OutFront tonight: Former CIA operative Bob Baer on what we know about North Korea's intentions.