President Barack Obama says he isn't bluffing when he says Iran shouldn't have a nuclear weapon. "I think both the Iranian and the Israeli governments recognize that, when the United States says it is unacceptable for Iran to have a nuclear weapon, we mean what we say." Iranian officials have insisted their nuclear program is intended solely for peaceful purposes but their statements have not persuaded Washington or Israel.

Toshiba may team up with Bill Gates to develop small nuclear reactors. The reactors could work for about 100 years without refueling. They could be launched fairly easily by states and cities. They provide emission-free energy. You probably remember the disaster at the Chernobyl nuclear power plant.