Jerusalem: Israel's prime minister says Iran remains "unrepentant" and "unreformed," warning the West against rushing into a deal with it on its nuclear program.

Benjamin Netanyahu said on Monday he will send a letter to world leaders warning them not to let Iran off the hook as the Nov. 24 deadline for nuclear talks approaches. Netanyahu says Iran continues to call for the annihilation of Israel and should not be negotiated with or allowed to become a nuclear power.

Netanayhu said: "Don't rush into a deal that would let Iran rush to the bomb."

While Netanyahu expressed concern about progress in the talks, US Secretary of State John Kerry was meeting for a second day with Iranian Foreign Minister Javad Zarif in Oman. There was no sign of an imminent breakthrough.