President Barack Obama and Prime Minister Benjamin Netanyahu stressed close U.S.-Israeli ties Monday, during a tightly choreographed White House appearance designed to quiet disputes over Iran and Middle East peace.

Speaking in the Oval Office, Obama admitted it was "no secret" the two men disagreed on how to deal with Iran's nuclear program, but both sought to end bitter public rancor and focus on areas of cooperation, including a military deal worth more than $30 billion.

Russia's Prime Minister Dmitry Medvedev admitted Monday that a plane crash in Egypt's Sinai peninsula that killed 224 people was possibly a terrorist attack.

"The possibility of an act of terror is of course there as the reason for what happened," he said in an interview to Rossiyskaya Gazeta state newspaper, parts of which were published Monday evening.

Three people died in a fresh attack on a mosque by two women suicide bombers Monday in northern Cameroon, a region repeatedly targeted by Boko Haram Islamists, residents and security sources said.

"A (woman) kamikaze blew herself up near a mosque in Fotokol. A second one was neutralized and killed. It was obvious the two suicide bombers were targeting the mosque," a local source told AFP.

Sixteen police officers were lightly injured during two hours of clashes with migrants in the northern French city of Calais, a local government spokesman said Monday. 

He said the violence erupted late Sunday when some 200 migrants tried to block traffic on the ring road around the port city where thousands live in a sprawling camp hoping to find a way across the Channel to Britain.

Afghan President Ashraf Ghani Monday condemned the beheading of a group of Shiite Hazaras, including a child, in the southern province of Zabul, the scene of deadly clashes between rival Taliban groups.

Local officials in Zabul province said the headless bodies of four men, two women and one child, who were kidnapped by armed men in October from neighboring Ghazni province, were found in Khak-i-Afghan district of troubled Zabul on Sunday. 

Russia announced Monday that it has agreed to push on with a deal to deliver S-300 missile systems to Iran after Moscow halted an earlier agreement due to U.N. sanctions slapped on Tehran. 

"The contract between Russia and Iran for delivery of S-300 missile systems is back in force," the state-run Russian Technologies corporation said in a statement, adding that the two sides had "signed a contract".  

Kosovo failed Monday in its bid to gain membership of the U.N. cultural body UNESCO, coming up three votes short of the two-thirds majority required.

Ninety-two UNESCO member states voted in favor, with 50 voting against and dozens of abstentions.

Britain's top court on Monday began hearings in a landmark case involving a Libyan man who accuses the British government of conspiring with the CIA in his "rendition" to Libya for torture in 2004.

The Supreme Court is hearing the case after the state appealed a previous Court of Appeals ruling in October 2014 that gave Abdul-Hakim Belhaj and his wife the right to take the government to court.

Up to 115 migrants from the Middle East staying at a British military base on Cyprus will be deported if they do not claim asylum with Cypriot authorities, British officials said Monday. 

"The options are either claim asylum in Cyprus or the process of deportation will begin," British Forces Cyprus spokesperson Sean Tully told Agence France Presse.

Britain is becoming "increasingly insular and self-absorbed", as revealed by its impotence in the Syria and Ukraine crises and its "ambivalence" towards the European Union, a report said Monday.

The country should give up its obsession "with its supposed past glories" and instead seek to reinvent itself as an "enabler of cooperation" on the world stage, said the report, authored by former diplomats and leading academics.