The US slammed as “provocative” the installment of 180 advanced centrifuge at Iran’s main uranium enrichment site at Natanz, stressing that this will be the six powers’ focus in the talks with Iran opening next Tuesday in Kazakhstan. The UN nuclear atomic agency in its latest report confirmed that the new IR-2m centrifuges can enrich three to five times faster than the outdated machines in use at Natanz until now.

The report's findings "prove that Iran continues to advance quickly to the red line" which Israel considers intolerable, said a statement from Prime Minister Benjamin Netanyahu's office, adding: "Iran is closer than ever to achieving enrichment for a nuclear bomb."

The "red line" also was a term Netanyahu used to the U.N. General Assembly. There, he said the world has until next summer at the latest to stop Iran before it can build a nuclear bomb.