Nuclear war

A nuclear war was a war in which nuclear weapons were used. On the worlds on which they were fought, they usually resulted in making the planet mostly or completely uninhabitable.

Nuclear wars on other worlds
On Skaro, the neutronic war between the Dals and the Thals resulted in massive deaths and mutations which eventually led to the creation of the Daleks. (TV: The Daleks)

The planet Minyos was rendered uninhabitable by nuclear war, which had been indirectly caused by the Time Lords. (TV: Underworld)

Atrios and Zeos were engaged in nuclear war for five years. (TV: The Armageddon Factor)

The planet Argolis was made uninhabitable and the Argolins made sterile after a twenty-minute nuclear war with the Foamasi. (TV: The Leisure Hive)

The Earth colony on Eldair became divided into two superpowers that annihilated each other in a nuclear war. (PROSE: House)

The Panjistri told the Kirithons that the original inhabitants of Kirith had destroyed themselves in a nuclear war, leaving only their ruins behind; this, like everything else the Panjistri told them, was a lie. (PROSE: Timewyrm: Apocalypse)

The civilisation of one planet destroyed itself in a nuclear war after a group of Eternals posed as gods and gave them knowledge of atomic power. (COMIC: Uninvited Guest)