A tabloid and a TV channel have given play to theories asking if Americans plotted the attacks. Also, some religious figures have said Charlie Hebdo staff brought the violence on themselves.
The magazine Charlie Hebdo published its latest edition in Paris on Wednesday. It was purchased by hundreds of thousands of Parisians as a gesture of support, selling out at outlets across the city.
Hayat Boumeddiene, wife of one of the Paris gunmen, has reportedly fled to Syria. As Vivienne Walt of Time notes, Boumeddiene is part of a trend of hundreds of Western women traveling to Syria.
David Greene talks to the BBC's Will Ross about reports of a massacre of civilians in Baga, a northeastern Nigerian town that's been overtaken by the Islamist group Boko Haram.
After a TV drama was yanked from Chinese airwaves so censors could cover up some low-cut outfits, snarky social media users have responded by Photoshopping coverings for cleavage everywhere.
Nasr al-Ansi, a top commander of Al-Qaida in the Arabian Peninsula, appeared in an 11-minute Internet video posted Wednesday, saying the massacre at Charlie Hebdo was in "vengeance for the prophet."
But Manuel Valls said the country wasn't at war with ordinary Muslims or their religion. His remarks came ahead of a 488-to-1 vote to reauthorize French airstrikes against the Islamic State in Iraq.
The militants, who are waging a deadly war in Nigeria, had attacked a Cameroonian military camp, a government official said. Nigeria's neighbors are being drawn into the battle with the group.
Investigators are learning more about the men behind the recent attacks in Paris. They are still looking to see if there are connections to major terrorist groups overseas.