The fight against so-called Islamic State (IS) will dominate talks in Washington shortly between French President Francois Hollande and US President Barack Obama.
The Paris suicide attacks claimed by IS have prompted the US to issue a worldwide travel alertto its citizens.
President Hollande is meeting other world leaders this week, hoping to forge a stronger alliance against IS.
But Turkey’s downing of a Russian jet has fuelled tension over the Syria war.
Russia says a Sukhoi Su-24 warplane was shot down over Syria on Tuesday by an air-to-air missile fired by a Turkish F-16 fighter. Turkey says the Russian jet had entered its airspace.
As Turkey is a Nato member the incident has put a new strain on Russian-Western efforts to neutralise the IS threat in Syria and Iraq.
The US is unlikely to support French efforts to build a Russian-Western military alliance against IS, correspondents say. But there is some military co-ordination with Russia.
France is now sending warplanes from the aircraft carrier Charles de Gaulle, off the Syrian coast, to pound IS targets.
Russia has also stepped up air raids against anti-government rebels in Syria, since a Russian airliner was blown up over Egypt by suspected IS-linked militants last month.
But Western leaders have urged Russia to focus its raids on IS, not on other groups fighting Syrian President Bashar al-Assad.
French police are examining what appears to be a suicide bomb belt dumped on a Paris street following the 13 November attacks that killed 130 people.
It is said to resemble belts used by the attackers and was found in a suburb which a suspect is thought to have passed through after the attacks.
The key suspect, Salah Abdeslam, remains at large and a massive manhunt for him continues.
After the attacks he fled to Belgium, where he and some of the other jihadists were based.
Read more: BBC
- REPORT: Hillary Got ‘PHYSICALLY VIOLENT’ After Losing–ATTACKED Staff and Had to be ‘Restrained’
- VIDEO: Hillary Cries Hysterically After Losing–Blames Comey & Obama
- Skinny Dipping Biden: Female Secret Service Agents Hate Being Assigned to Biden, But Hillary is Worse
- Informant on Clinton, Russia Uranium Deal has been Identified
- Bill Clinton Finally Being Targeted for His Sexual Abuse to Women [WATCH]
- 9yr-Old Girl Has Some Mad Crazy Handgun Skills [Video]
- WATCH: Drake Defends Female Fans After Man Gropes Them During Concert
- Texas Shooting: Two Heroes Who Chased Down Shooter Reveal What Happened
- Father With a Gun: Daughter Saved by Her Dad After Gang Tries to…
- Gun Yoga, Is It a Real Thing? [WATCH]
- THE KILL LIST: Islamic State has Released List of American Cities They Plan on Attacking
- TERRIFYING: Family Trapped in Their Vehicle as LIONS Fight Over Carcass Under the WHEEL
- Savage: Dude Explains Feminism in 2017, ‘You’re a Man. Everything a Man Does is…’ [Video]
- WATCH: Judge Jeanine Rips Apart Michael Moore
- Watch: When Americans ‘Steal’ Illegal Immigrants’ Job
- Dear Idiot NYT Writer: Here are THREE Provable Instances of Americans Protecting Their Liberty with Guns
- Father Abandons Wife & 7 Kids to Live as a 6yr-Old Girl [Video]
- Prostitute Shoots Man in the Head Because He Didn’t Know How to…