Changes

==Subject matters==

==Subject matters==

===Nuclear disarmament===

===Nuclear disarmament===

In the backstory for ''Metal Gear 2: Solid Snake'', the world was mentioned to have undergone total nuclear disarmament, although Zanzibar Land, led by Big Boss, managed to retrieve several still-intact nuclear stockpiles, ensuring they were the sole nuclear power by the events of the game. This aspect later ended up retconned after Metal Gear Solid's release, due to several events between the release of the two games that made it incompatible with the real world. Nuclear disarmament, or rather, deterrence was also a focal point in Peace Walker.

In the backstory for ''Metal Gear 2: Solid Snake'', the world was mentioned to have undergone total nuclear disarmament, although Zanzibar Land, led by Big Boss, managed to retrieve several still-intact nuclear stockpiles, ensuring they were the sole nuclear power by the events of the game. This aspect later ended up retconned after Metal Gear Solid's release, due to several events between the release of the two games that made it incompatible with the real world. Nuclear disarmament, or rather, deterrence was also a focal point in Peace Walker. In ''The Phantom Pain'', there was also a secret ending for disabling all nukes on a server that implied that the world had fully undergone total nuclear disarmament by 1984.

===Cloning, Stem Cells, and Abortion===

===Cloning, Stem Cells, and Abortion===