The United States appears to be preparing to resume large-scale strikes against Iran, but there is unlikely to be a military solution for either side in the devastating conflict, experts say.

The United States could strike Iran as soon as this weekend, a U.S. envoy said, after mounting threats by both Washington and Israel.

Iran has "substantially increased" its efforts to target Americans in the Middle East and beyond, U.S. national intelligence chief Jay Clayton has warned.

Iran said on Saturday that U.S. military ships would never be allowed to enter the Gulf "under any circumstances" and President Donald Trump will "take that dream to his grave".

Iranian President Massoud Pezeshkian will meet his Russian counterpart Vladimir Putin in Moscow next week, Iranian media reported.

Clashes between protesters and police erupted in two Tunisian towns after the deaths of men in incidents locals say involved security forces, media reported Friday.

At least seven people were killed in a shooting inside a church in Karak governorate in southern Jordan, a security source told state TV on Friday.

The source told the official Al-Mamlaka broadcaster that "at least seven people died in the shooting at Hammoud Church in Karak, while about 10 others were wounded, some of them critically" when two unidentified gunmen opened fire inside the church, according to authorities.

Israeli Prime Minister Benjamin Netanyahu on Friday warned of an imminent large-scale military operation in the occupied West Bank and vowed to displace some residents of Hebron after Palestinian gunmen wounded five Israelis.

Israeli forces "will enter the neighborhood from which the terrorists came, evacuate the residents, go from house to house, and destroy the terrorist infrastructure", Netanyahu said during a visit to Hebron, according to his office.

Talks between Russia, Ukraine and the United States are "planned" to resume in November in Abu Dhabi, Kremlin spokesman Dmitry Peskov told reporters on Friday.

Russia indicated its readiness to resume the talks, which have been at a standstill since the beginning of the year, following a meeting this week in Saint Petersburg between President Vladmir Putin and U.S. special envoy Steve Witkoff.

Israeli Prime Minister Benjamin Netanyahu said Friday that Israel had prevented a "major attack" after soldiers killed two armed Palestinian assailants in a firefight that left five wounded near the West Bank city of Hebron.

"I commend our heroic fighters, who acted resolutely and prevented a major terrorist attack, and wish our wounded a speedy recovery," Netanyahu said in a statement.