a little background story. may not be 100% accurate.
Korea was under Japan rule for awhile, and during WWII the Soviets joined the allies and declared war on Japan, and sent troops in Korea to liberate them. The US made the 36 parallel dividing Korea into two, North with the Soviets, and South with the US. The Soviets agreed to do this.
During the cold war, around 1950, N. Korea invaded S. Korea with limited support from the Soviet Union. The United Nations and the US intervened and force North Korea to do a tactical retreat, then China entered and push the UN forces back behind the 36 parallel line, and it has been a deadlock ever since.
Since then there has been a number of sanctions over the years by the EU, UN, US, South Korea, and Japan. Kinda unfair that they're only threatening the US when several other countries is sanctioning them. lol.













