For the first time since World War II ended in 1945, the Japanese capital of Tokyo held a drillthat simulated a missile attack. Part of the drill, as you see here, was staged in anamusement park. It took about 10 minutes from start to finish, instructions came outthrough text messages and a loud speaker, and people who volunteered to participate movedquickly and calmly to some designated safe areas, most of those were underground.
Dozens of drills like this have been held across Japan in recent months. Like the U.S., Japan is arival of North Korea, and Japanese Prime Minister Shinzo Abe says that the missile threat fromNorth Korea has made the security situation in Japan the toughest since World War II.
Japan has been making large purchases of military equipment recently, mostly from the U.S.And critics are concerned that Japanese leaders might be working toward expanding themilitary beyond its role of self defense, and they accused the Japanese government ofpoliticizing the threat from North Korea.
Japanese government officials say the two intercontinental ballistic missiles that North Koreafired over Japan last year are reasons why emergency drills are needed.
NICK PATON WALSH, CNN SENIOR INTERNATIONAL CORRESPONDENT: Nuclearweapons are terrifying devices, but much less of a threat until they are carried in a distance bya ballistic missile.
These ballistic missiles normally follow a curve. They fly into the air and follow and follow apredetermined trajectory until they hit a target.
This requires intense preparation and testing.
So, who has those and how can we defend against them?
Thirty-one countries are known to have ballistic missiles. Twenty-six have missiles that cantravel at least 300 kilometers. And twelve are known to be able to reach a thousandkilometers.
Eight countries' missiles fall into the last category, reaching at least 5,500 kilometers. Theseinclude ICBMs, intercontinental ballistic missiles, that can fly half-way around the world.
Now, these are just the missiles that we know about. There's an underground trade in some ofthis technology, traded illegally on the black market. That's thought to have happened afterbreakup of the Soviet Union. Iran has also been accused of providing missile technology toHouthi rebels in Yemen.
So, what can nations do to defend against them? The more they spread, the greater thefocus on missile defense systems. Eighteen countries already have invested in some form ofthese vastly expensive systems, and five more are in the process of developing or purchasingthem.
But that didn't solve the problem and it's unclear how effective they are. For instance, twocountries that the U.S. sees as threats, North Korea and Iran, have far more missiles than theU.S. or any other country has interceptors. So, really, the U.S. or its allies need a strategy todeal with hostile missiles before they're even launched.