Republican US presidential frontrunner Donald Trump branded Angela Merkel's welcoming of migrants to Germany "insane" and said the policy will only spark riots in the country.
US President Barack Obama congratulated Tunisian civil society groups who helped secure a democratic transition on their Nobel Peace Prize win, calling it a tribute to the nation's courage.
President Barack Obama denounced the immigration policies of leading Republican presidential candidate Donald Trump in a speech to Latino political leaders.
Canadian Prime Minister Stephen Harper rejected a report accusing his office of holding up the resettlement of Syrian refugees, less than two weeks before legislative elections.
Facebook will begin testing a new feature allowing users in Ireland and Spain to express a range of emotions on posts -- but there will be no "dislike" button, the social network said.
US Defence Secretary Ashton Carter predicted Russia would soon begin suffering casualties in Syria, as Moscow dramatically ramps up its military campaign in the devastated nation.
Vice President Joe Biden, who has spent months mulling whether to jump into the 2016 White House race, received strong encouragement when a pro-Biden group released a TV ad urging him to run.
Brazil's President Dilma Rousseff suffered a major new setback when a court ruled that her government's accounting practices were illegal, handing ammunition to opponents threatening impeachment proceedings.
Sweden's Tomas Lindahl, Paul Modrich of the US and Aziz Sancar, a Turkish-American, won the 2015 Nobel Chemistry Prize for work on how cells repair damaged DNA.
Former US president Bill Clinton attributed outspoken Republican presidential hopeful Donald Trump's current success in surveys to his skills as a 'master brander' but said his appeal could be short-lived.
President Dilma Rousseff's campaign will be investigated for alleged use of funds skimmed from the vast Petrobras corruption scheme, in a twist that could potentially end her term early.