Former US Defence Secretary James Mattis has denounced President Donald Trump, accusing him of stoking division and abusing his authority.
Russia's President Vladimir Putin has declared a state of emergency after 20,000 tonnes of oil leaked into a river within the Arctic Circle.
New charges have been announced against all of the sacked police officers present at the death of African American George Floyd in Minneapolis.
Facebook said Tuesday that it had shut down pages and accounts associated with what it said was a hate group, whose members were discussing bringing weapons to the protests that are happening across the country.
A lawyer for the family of George Floyd, whose death sparked unrest across the US, has accused a police officer of "premeditated murder".
Curfews have been ordered in cities across the US to try to stem unrest sparked by the death of a black man in police custody.
According to legend, when the plague came to the city of Yogyakarta on the Indonesian island of Java, the sultan ordered his citizens to cook sayur lodeh and stay home for 49 days. The plague ended. And so began a practice that continues to this day.
Moscow's authorities have more than doubled the official death toll from Covid-19 in the Russian capital for the month of April.
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.