North Korea said it had successfully tested a hydrogen bomb on Wednesday. Even though experts believe the country has not developed a nuclear warhead small enough to fit on a missile, the announcement still caused alarm around the globe. North Korea's Taepodong-2 missile has an estimated range of 6,000 kilometres placing Alaska at risk, along with India and parts of Russia. Read more on the Independent.
Which countries could be in range of a North Korean H-bomb?





















