Snapback” sanctions will be triggered by the end of August if Tehran fails to make concrete progress to limit its nuclear program.

Languages: English and Farsi Iran is threatening to raise uranium enrichment to weapons-grade levels and exit the Nuclear Non-Proliferation Treaty (NPT) if Western powers move forward with reimposing United Nations sanctions,

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.