Top European diplomats have warned Iran they are prepared to trigger the UN "snapback" mechanism — reimposing international sanctions — if Tehran fails to make concrete progress on reviving the

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,