(CNN) North Korea has launched 15 missiles in 22 tests in 2017. According to US intelligence sources, the most recent test detonated a 140-kiloton nuclear device , which the North Koreans claim was a hydrogen bomb. (That's 10 times as powerful as the atomic bomb the United States dropped on Hiroshima in World War II.) The UN secretary-general has continuously condemned North Korea's ballistic missile launches as serious violations of UN Security Council resolutions. The true risk when it comes to North Korea is its cyberattack capabilities.

Source: CNN September 23, 2017 17:56 UTC