The UN Security Council orders states to block the flow of jihadists to Iraq and Syria, as US jets bomb Islamic State (IS) militants.

Brazilian researchers release thousands of mosquitoes infected with a bacteria that suppresses Dengue fever into the environment in Rio de Janeiro.

French President Francois Hollande condemns the beheading in Algeria of tourist Herve Gourdel by a jihadist group linked to Islamic State militants.

The US government agrees to pay $554m (£339m) to the Native American Navajo tribe, settling a lawsuit with claims dating back more than 50 years.

The number of people killed or wounded in the US in mass shootings has increased dramatically in recent years, an FBI study finds.

Ukraine's prime minister urges the West not to lift sanctions on Russia, after the US president says they could go if Moscow supports peace efforts.

The Indian satellite which entered orbit around Mars on Wednesday begins work, taking pictures of the planet's surface, media reports say.

Australia confirms it will sign a deal with Cambodia to resettle refugees there, drawing immediate criticism from rights groups.