Iran’s foreign minister says the country is open to resuming nuclear talks with the U.S. if guaranteed no further attacks

Some of the most important considerations for Tehran on the road to a nuclear weapon are political, not technical, and every delay complicates its calculations.

The Pentagon on Wednesday sharpened its assessment of Iran's nuclear program, declaring that Iran's ability to build a nuclear weapon following the U.S. strike on its nuclear facilities is "closer to two years" away.