Rwanda has restricted movement across its border with the DR Congo, where an Ebola outbreak has killed more than 1,800 people in the past year.
The US Department of the Treasury has imposed sanctions against Iranian Foreign Minister Mohammad Javad Zarif.
North Korea has fired two short-range ballistic missiles off its east coast, according to South Korea's military, the second such launch in a week.
At least 17 people have been killed after a small military plane crashed into a residential area in the Pakistani city of Rawalpindi, rescue officials have said.
Three people have been killed and 15 injured after a gunman attacked a food festival in California.
A British SAS soldier who died fighting Islamic State in Syria was killed by friendly fire and not by an enemy roadside bomb, as previously claimed.
The US Supreme Court has said that President Donald Trump can use $2.5 billion (£2 billion) of Pentagon funds for a section of wall on the southern border.
The US president has vetoed resolutions in Congress to block the sale of $8.1bn (£6.5bn) worth of weapons to Saudi Arabia and the United Arab Emirates.
Boris Johnson will head to Downing Street later after taking over from Theresa May as prime minister.
Russia's unmanned Luna-25 spacecraft has crashed into the Moon after spinning out of control, officials say.
Donald Trump has confirmed that he will not take part in Republican presidential debates with his rivals in the race for the White House.