A "binding" climate agreement with assurances of cash for developing nations will be the measure of success for a U.N. summit starting in Paris next week, French President Francois Hollande said Tuesday.

"The solution will be found in finance," Hollande told L'Express magazine on how to avoid deadlock at the summit tasked with curbing dangerous climate change.

Russian President Vladimir Putin warned Ankara on Tuesday that Turkey's downing of a Russian warplane on the Syrian border would have "serious consequences" for bilateral ties, as Turkey's premier described the act as a national "duty."

Speaking at a meeting with Jordanian King Abdullah II in Sochi, a tense-looking Putin branded the shooting down of the aircraft a "stab in the back" by "accomplices of terrorists.

France will install security gates at stations in Paris and Lille for the Thalys cross-Europe rail services by December 20 in one of a raft of measures introduced after the Paris attacks, minister Segolene Royal said Tuesday.

A Thalys train from Amsterdam to Paris was attacked by a heavily armed man in August, but he was overpowered by passengers.

Turkey's Prime Minister Ahmet Davutoglu on Tuesday unveiled a new cabinet stacked with loyal allies of President Recep Tayyip Erdogan, including the strongman's own son-in-law as energy minister.

The announcement came on the same day Turkish fighter jets shot down a Russian war plane on the Syrian border, creating a new security challenge for the government. 

A majority of Britons want to leave the European Union, according to a new opinion poll on Tuesday.

A poll in September by another institute was the first to put the EU exit camp in the lead.

The man who loaned his Paris suburb apartment to the suspected ringleader of the attacks on the city and accomplices but claimed he did not know who they were, was sent before a French judge on Tuesday.

Jawad Bendaoud, who sparked a flurry of mocking social media memes for an interview he gave protesting his innocence as the police assault on the apartment in Saint-Denis was ongoing, was arrested soon afterwards.

Somali pirates have attacked two fishing boats, capturing one from Iran with 15 crew, an anti-piracy expert said Tuesday, adding that the vessel was now heading towards Somalia's coast.

"Two vessels were attacked," said John Steed from Oceans Beyond Piracy, which tracks ships that have been attacked and helps support hostages.

Italy has expelled four Moroccans who were found with a video inciting people to "fight the enemies of Islam," judicial sources said Tuesday, in the first such move following the Paris terror attacks.

This year, Italy has already expelled some 60 Islamist radicals, including four imams, but these are the first expulsions since the November 13 strikes in the French capital.

Peace talks between Sudan's government and rebels have adjourned without a deal after a week of negotiations in Ethiopia, African Union mediators said Tuesday.

Rebel factions from the war-torn western Darfur region as well as the Sudan People's Liberation Movement-North (SPLM-N), fighting the government in the southern Blue Nile and South Kordofan states since 2011, met with government delegates from Khartoum.

Cambodia's increasingly fractious political situation is pushing the country towards a "dangerous tipping point", the U.N. rights envoy to the kingdom said Tuesday.

The country has been plunged into a bitter political crisis after an arrest warrant was issued for Sam Rainsy, Cambodia's most prominent opposition leader.