America-North Korean War

During 2017-18, the country of North Korea was testing its ballistic missiles. Tensions rose between it and America, but didn't lead to war. At least, not in the original timeline. In this timeline, it did.

September 2017; North Korea tested its first thermonuclear weapon, prompting America's president Donald Trump to re-list the country as a State Sponsor of Terrorism.

November 2017; North Korea tests second thermonuclear weapon, and test-fires a missile over Japan.

December 2017; North Korea and China make a Nuclear Alliance, worrying other countries.

January 2018; China sets up a missile-testing base in the South China Sea.

February 4th, 2018; North Korea's forces begin moving into the demilitarised zone between it and South Korea, prompting forces to mobilise on the other side.

February 6th, 2018; Ballistic missile is fired at Hawaii by North Korea, decimating the population. A normal missile hits the Kilauea volcano, causing a small eruption.

February 6th, 2018; America officially declares war on North Korea, as tensions and fears rise all around the world.