The closing of France's borders comes after months of influxes of people into the country from Iraq and Syria -- where the Islamic State group holds territory.
Service for users of Twitter's popular live-streaming app had been interrupted by heavy traffic in reaction to the terror attacks in Paris.
President Francois Hollande declared a state of emergency and closed the country's borders after Friday night's deadly terror attacks. Security had been stepped up after January's Charlie Hebdo attack.
The Islamic State group made serious threats against Paris in March and July this year, although no group has formally taken responsibility for Friday's attacks.
In remarks Friday, the president said the United States would stand in solidarity with France following the terror attacks.
There is an ongoing hostage situation at the Bataclan concert venue.
Scores of people in Paris were killed and authorities said they believe the attackers have committed suicide. It is still unclear who is responsible for the carnage.
President Francois Hollande was reportedly in the national stadium watching the France-Germany soccer match and was evacuated following the Friday night attacks.
A government body in France has banned a planned demonstration after the burial of suspected terrorist Said Kouachi.
A cleric in Peshawar, Pakistan, held a funeral in honor of the Paris attackers even as victims were honored in France and Israel.
Obama was under fire for not attending the Paris anti-terror rally. A Texas Congressman took aim.
Boumeddiene has multiple options for avoiding detection if she's in Syria.
Terror attacks by Muslim extremists have seen millions of people rise up and say “Je Suis Charlie.”
After the three deadly terror attacks in Paris, Israel expects 10,000 French Jews to immigrate in 2015.
Jihadists have turned to small-scale attacks because of the effectiveness of counterterrorism measures.
Instead of President Barack Obama or Vice President Joe Biden, the White House sent Jane Hartley, its ambassador to France.
The feeling of solidarity against terrorism may be short-lived as fear of backlash grows.
A lawyer and columnist for the magazine said the new cartoons are meant to show that it will “cede nothing” to extremists.
The announcement was made after Prime Minister David Cameron held a meeting with the country's security and intelligence chiefs.
About half of them will be used to protect Jewish schools after four shoppers were killed by a gunman at a kosher store Friday.
Turkey’s foreign minister said that Hayat Boumeddiene had crossed into Syria from Turkey on Jan. 8, a day after the attack on Charlie Hebdo.
Several world leaders marched together, in Paris, in a show of solidarity against terrorism.