Iran on Sunday called for fresh proposals from the major powers in talks on its nuclear program set to resume next week, the first since the election of moderate President Hassan Rouhani.

Foreign Minister Mohammad Javad Zarif said the previous offer, made by the P5+1 group at two meetings in Kazakhstan in February and April, before Rouhani's June election, was no longer valid.

Iran has arrested four people suspected of attempting to sabotage one of its nuclear plants, Atomic Energy Organization chief Ali Akbar Salehi said on Sunday.

"Some time ago, we uncovered sabotage activities by several people at a nuclear plant," Salehi said in comments carried by the Mehr news agency.

U.S. President Barack Obama said in an interview released Saturday that Iran was "a year or more away" from getting a nuclear bomb, in a clear sign of discord with Israel.

Obama also told the Associated Press that Iranian President Hassan Rouhani had staked his credibility on dialogue and it was up to the United States to see if he had the political weight to follow through.

A majority of Israelis would support unilateral military action against Iran, according to a poll published Friday after Prime Minister Benjamin Netanyahu said his government was ready to act alone.

Some 65.6 percent of 500 Jewish Israelis surveyed by the pro-government Israel HaYom newspaper said they would support military strikes to halt Iran's nuclear program, and 84 percent believed the Islamic republic had no intention of reining in its alleged drive to build a bomb.

The United States plans to keep up its sanctions regime against Iran, even as it seeks a diplomatic solution over Tehran's suspect nuclear program, a senior U.S. official said Thursday.

International sanctions over what the West says is a nuclear weapons program have badly hit Iran's economy and its leaders have made it clear they are looking for relief.

Iran's President Hassan Rouhani said Wednesday that Israel was "upset and angry" with signs of an emerging new relationship between the Islamic republic and the West.

On Tuesday, Israeli Prime Minister Benjamin Netanyahu told a UN summit his country was ready to act alone to halt Iran's alleged efforts to build a nuclear bomb.

Iran's top general on Wednesday rejected Israel's threat of military strikes as an act of "desperation" after Tehran's charm offensive to repair ties with the West.

"Today the choice of military option is rusted, old and blunt. It is put on a broken table that lacks stability," said armed forces chief-of-staff Hassan Firouzabadi, quoted by Fars news agency.

Egypt's Tourism Minister Hisham Zazou said on Tuesday that tourism links with Iran had been suspended for reasons of "national security", state television reported.

Flights bringing Iranian tourists to Egypt began under now ousted president Mohammed Morsi, amid a thaw in relations between Cairo and Tehran.

Iran claimed Tuesday that Israel's arrest of an alleged Iranian spy was a "repetitive scenario" aimed at ending what it called the Jewish state's "isolation" within the international community.

Just hours after Prime Minister Benjamin Netanyahu left for Washington on Sunday, Israel's Shin Bet security service announced the arrest on September 11 of a man it said was an Iranian spy carrying photographs of the U.S. embassy in Tel Aviv.

Gulf Arab states are uneasy about the unexpected overture between Washington and Tehran, fearing any rapprochement will come at the price of concessions to their regional rival, analysts say.

The six oil-rich monarchies have "fears and apprehensions" about the dramatic turn in U.S. Iran policy signaled by last week's historic telephone call between presidents Barack Obama and Hasan Rouhani, Gulf Research Center chief Abdul Aziz Saqr said.