Washington Post: “Iran’s government has mastered the critical steps needed to build a nuclear weapon,” writes Joby Warrick for the Washington Post. According to the International Atomic Energy Agency, documents and other records show that a former Soviet weapons scientist and experts in Pakistan and North Korea have provided crucial knowledge and technology. Despite having claimed to cease weapons-related research as of 2003, Iran has apparently continued a secret research program that was more ambitious, more organized, and more successful than commonly suspected. The IAEA is due to release a full report of its findings later this week.