Tehran could soon have humankind's most frightening weapon if substantial diplomatic progress is not made in the coming days.
The United States, along with its partners Russia, China, Britain, France and Germany (known as the "P5 plus one"), will sit down on Thursday with a representative of Iran. From the American perspective, the principal item on the agenda is Iran's illicit nuclear program. Iran's leaders have said they are prepared to talk about virtually anything but that. If diplomacy does not rapidly deliver results, the United States will have to adopt tough measures to stop Iran from obtaining nuclear arms.
