Ted Cruz, locked in a tight race in Iowa with Donald Trump just two days before the state's crucial US presidential nominating contest, has urged supporters to give him the first victory of the 2016 campaign.
German Chancellor Angela Merkel has tried to placate the increasingly vocal critics of her open-door policy for refugees, insisting that asylum seekers from Syria and Iraq will go home once the conflicts there end.
The family of a protester killed by police during the ongoing protest at a US wildlife reserve said he seemed to have been shot in the back with his hands up, although authorities said he was reaching for a gun.
Seven of former US Secretary of State Hillary Clinton's private email chains will be withheld from public release because they have been found to contain top secret information, the State Department says.
The International Olympic Committee assured teams travelling to August's Rio Olympics the Games would be safe from the Zika virus, but urged visitors to carefully protect themselves while in the region.