At least six sophisticated terror organizations and Al Qaeda-affiliated fighters from Iraq are active in Syria, which has a large, sophisticated chemical weapons program and, perhaps, a biological arsenal. If the Syrian government falls, who will guard the WMD?
America's waste program is at an impasse and community involvement is key to moving it forward.
Predictions of an imminent Iranian nuclear bomb are extreme, worst-case scenarios that impede the sober pursuit of a diplomatic solution.
The United States can help move the Middle East toward a WMD-free zone, regain leadership in the region, make diplomacy a strategic tool, and stem nuclear proliferation. If only it would.
Uncertainty about a North Korea under Kim Jong-un is endemic. The best way to reduce it is not to engage in idle speculation but to try diplomatic give-and-take.
Russia is extending the lives of its nuclear power plants, including Chernobyl-type reactors, without requiring environmental assessments. That's not only unsafe but also illegal.
To make further progress in reducing the number of nuclear weapons, some missions for nuclear weapons need to be eliminated. The most dangerous nuclear mission -- a counterforce attack on the other side's nuclear arsenal, before it is used -- should be the first to go.
If North Korea is serious about talks, can the parties negotiate a comprehensive deal? Yes, they can, should, and must.
The Conference on Disarmament has let Pakistan bottle up a treaty to ban fissile material production for years. The US should help start negotiations -- somewhere else.
Safety and security staffs need to be trained to cooperate if they are to deal with the array of natural and man-made dangers faced by nuclear plants.
A shift out of nuclear power will require a $290 billion investment but could create hundreds of thousands of jobs and an energy mix dominated by alternatives.
GPS signals can detect atmospheric changes that accompany clandestine nuclear tests. They may also give the US a reason to ratify the Comprehensive Test Ban Treaty.
Why the Hiroshima and Nagasaki bombings and the Fukushima disaster should cause the Japanese government to change policy and support a nuclear weapons convention.
To advance his goals, Obama should issue a directive that explains a new nuclear deterrence plan focused on destroying essential enemy infrastructure.
Reflections on the life and accomplishments of Jonathan B. Tucker, 1954-2011.
Iran's first nuclear plant was set to go online in August. A troubled construction record and Iran's seismic history have neighbors fearing a nuclear accident.
In times of conflict, both India and Pakistan rely on the United States to provide crisis-management support, but the two countries must find a more sustainable approach.
Why proposed US funding cuts for low-dose radiation research will impair government's ability to make rational decisions about nuclear power and other radiation policy issues.