UN Secretary-General Ban Ki-moon on Friday condemned the Bastille Day attack in the French city of Nice, calling for intensified efforts to confront terrorism and violent extremism.

Ban "stands firmly behind the French government and people as they confront this threat and stresses the need to intensify regional and international efforts to combat terrorism and violent extremism," a UN statement said.

Venezuela will temporarily re-open its border with Colombia on Sunday, a state governor said, a move that will allow desperate Venezuelans to stock up on food, medicine and other basics sorely lacking in their country.

"We will not put up any obstacle... whoever wants to cross can cross," Jose Vielma Mora, governor of the border state of Tachira, told reporters Thursday.

Iran's Foreign Minister Mohammad Javad Zarif has called on the United States to choose diplomacy over intimidation and to fulfill its obligations under a year-old nuclear deal with world powers.

Theresa May was in Scotland on Friday on her first visit as Britain's new prime minister, bidding to maintain unity after a Brexit vote that revived Scottish independence ambitions.

Belgium will beef up security for next week's national day celebrations after the truck attack in the French city of Nice on Bastille Day, Prime Minister Charles Michel said Friday.

Nigeria's military has clawed back swathes of territory held by Boko Haram, opening up routes once infested with Islamist fighters, allowing life to resume for people in the remote region.

Leading Muslim clerics joined Gulf Arab leaders on Friday in condemning a truck attack that killed at least 84 revelers in the Mediterranean resort of Nice on France's national holiday.

Egypt's top Muslim cleric Shawki Allam condemned the assailant as an "extremist" who "follows in the footsteps of the devil."

Australia's wealthy Prime Minister Malcolm Turnbull reportedly made a large personal donation to the conservative Liberal Party during the recent fiercely fought election in a move ridiculed by the Labor opposition.

The multi-millionaire, whose Liberal/National coalition was narrowly re-elected, handed over Aus$1 million (US$760,000) of his own money in the final weeks of the campaign with the party "desperate... for finances", The Australian newspaper said Friday.

Sympathy and condemnation for the Nice attack dominated an Asia-Europe summit in Mongolia Friday, drawing attention away from Beijing's rejection of a tribunal ruling dismissing its extensive South China Sea claims.

The Asia-Europe Meeting (ASEM), held every two years and which is celebrating its 20th anniversary, is supposed to be a venue for increasing cooperation across the Eurasian region and exploring ways to strengthen global agreements governing everything from trade to civil aviation.

A recent flare-up of deadly violence in South Sudan will dominate the agenda as heads of state gather Sunday for a key African Union summit in the Rwandan capital Kigali.