KEY POINTS
  • Russian President Vladimir Putin said he will develop ground-launched nuclear missiles if the U.S. withdraws from the Intermediate-Range Nuclear Forces Treaty.
  • Nine nations make up the world's nuke club, with approximately 14,500 nuclear weapons.
  • The U.S. and Russia own the majority of the world's nuclear weapons.
A deactivated Titan II nuclear intercontinental ballistic missile, or ICBM, is seen in a silo at the Titan Missile Museum in Green Valley, Arizona, May 12, 2015.

The two leaders of the world's nuclear club are threatening to withdraw from an arms control agreement, a move that will allow each country to bolster its arsenal with more nukes.

Russian President Vladimir Putin said Wednesday that he will develop ground-launched nuclear missiles if the U.S. withdraws from the Intermediate-Range Nuclear Forces, or INF, treaty.