The International Atomic Energy Agency’s visit to Japan this week coincides with unprecedented criticism of the Tokyo Electric Power Company's handling of Japan's nuclear crisis following the March 11 earthquake.
Analysts say the new US sanctions – seen as a move to weaken Iran's economy – are the Obama administration's response to critics in Congress who say the US has been slow to get tough.
The Taliban assault highlights military weaknesses but many experts say Pakistan adequately safeguards its nuclear arsenal against attack.
At Fukushima Daiichi in Japan, nuclear reactor Unit 1 is being prepared for 'cold shutdown,' which requires flooding the reactor's containment structure with cold water to stop steam production.
Fukushima is a Level 7 accident – the same rating given the Chernobyl fire and explosion 25 years ago. Still, Chernobyl remains the worst nuclear accident in history.
Former President Jimmy Carter arrived in North Korea on Tuesday for talks aimed at reducing tensions with North Korea. This trip looks similar to his first visit in 1994.
Many thought that Syrian President Bashar al-Assad was at heart a reformer. But his response to unprecedented protests and violence suggest otherwise.
According to the IAEA's scale, the Fukushima crisis in Japan is now a 7, the most severe rating and equal with Chernobyl. But experts say the scale is deeply flawed.
Based on new estimates of the radiation that has been released, Fukushima now has the worst score on the IAEA's accident rating scale. But much about the reactors, and their future, is still unknown.