North Korea's dictator has been making a lot of threats, but most experts doubt he can follow through. However, it's only a matter of time until Kim Jong-Un's nuclear threats have to be taken seriously.
At the moment, the Heritage Foundation's Dr. Peter Brookes says the North probably can't launch an intercontinental missile.
"It's not clear that they have a warhead ready to be put on top of a missile for a long range flight; maybe for a shorter or intermediate range flight but maybe not for a long range flight."
Even if they can, Rice's Professor Rick Stoll says the North's abilities are extremely limited.
"They might be able to reach parts of Alaska, but currently they don't have an intercontinental ballistic missile that could reach, say, Houston."
Professor Stoll says it's not time to panic -- yet.
"I don't think the leadership is crazy, but if you back them into a corner and they say 'my goodness, we're about to lose control of our country' then the probability of doing something extreme goes up."
But both say the North can nuke South Korea or Japan and that would be considered an attack on the United States.