For the first time in history, governments around the world have agreed to legally binding limits on global temperature rises as the Paris Agreement (PDF)  on climate change became effective on Nov. 4. All governments that have ratified the accord are now legally obligated to cap global warming levels at 2 C above pre-industrial levels—regarded as a limit of safety by scientists. But environmentalists and other groups have said the agreement may not be enough. According to Asad Rehman of Friends of the Earth: "The Paris agreement is a major step in the right direction, but it falls a long way short of the giant leap needed to tackle climate change. Far tougher action is needed to rapidly slash emissions." Greenpeace also agreed that while the agreement is a major step forward, it needs stronger force. Andrew Norton, director of the International Institute for Environment and Development, further pointed out that governments would need to take measures to ensure that the poorest and most vulnerable countries get adequate financing to tackle climate change problems..

The Pentagon announced plans March 15 to add 14 missile interceptors to its anti-missile system in response to recent nuclear posturing of North Korea. The new interceptors would augment 26 already deployed at Ft. Greely, Alaska, with four others deployed at Vandenberg Air Force Base in California. But the system is plagued with technical failures. The last successful hit against a target was in December 2008; test launches have failed to hit their targets since then. The Pentagon is said to have discovered a flaw in the guidance system of the newest Raytheon-made model. (LAT, March 16; Bloomberg, March 15) The ABM Treaty, which barred anti-ballistic missile systems during the Cold War, was pronounced effectively dead in the Bush years