Iran's foreign minister says Israel is trying to undermine the progress achieved in Tehran's nuclear talks with world powers.

The negotiations — which ended in Geneva on an upbeat note this week with Western and Iranian negotiators announcing a follow-up round early next month — are meant to reduce fears that Tehran is seeking a nuclear weapon.

Foreign Minister Mohammed Javad Zarif posted on his Facebook page today that "there is a high possibility the talks would be disturbed through various efforts" on the part of Israel.