The appointment of the 73-year-old known as 'Super Mario' capped weeks of political instability for the country still in the grips of the health crisis that has killed more than 93,000 people.

Barty's straightforward 6-2, 6-4 win over Russia's Ekaterina Alexandrova put her into the fourth round without dropping a set as she bids to become the first Australian winner since Chris O'Neil in 1978.

Nigeria's government this week had warned against holding new protests at Lekki, saying the rallies could descend into violence in the name of justice.

The military prison accommodates inmates linked to the US "war on terror" including Pakistani Khaled Sheikh Mohammed, the self-proclaimed mastermind of the 11 September 2001 attacks.

More than 107 million people have been infected worldwide and nearly 2.4 million have died from COVID-19.

Biden instructed the Department of Homeland Security (DHS) earlier this month to take action to end the controversial "Remain in Mexico" program put in place by his predecessor Donald Trump.

The WHO's mission to Wuhan, where the first cases were identified, failed to identify the source of the virus but poured cold water on the theory that it leaked from the city's virology laboratory.

"The article of impeachment now before the Senate is an unjust and blatantly unconstitutional act of political vengeance," attorney Michael van der Veen said.

The country is engulfed in a bloody power struggle that erupted in 2014 between its government, supported by Saudi Arabia, and Iran-backed Huthi rebels, who control the capital Sanaa and most of the north.

According to the Italian daily Gazzetta dello Sport and the BBC, veteran racer Fernando Alonso was hit by a car near his home in Lugano in Switzerland, near the Italian border.

More than 13.5 million people have been given a jab since the country's biggest-ever immunisation programme began in early December.

Nick Kyrgios produced a virtuoso performance in the first two sets, using every trick in the book, including underarm serves and tweeners, as he fed off the energy at a boisterous John Cain Arena, his favourite court.

Since the West African Ebola crisis of 2013-16 - which left 11,300 dead across the region - the WHO has eyed each new outbreak with great concern, treating the most recent Congolese epidemic as an international health emergency.

In the video, published by state broadcaster CCTV, the surface of the planet is seen coming into view out of a pitch-black sky against the outside of the Tianwen-1, which entered the orbit of the Red Planet on Wednesday.

Speaking before the Human Rights Council in Geneva, the UN's deputy rights chief Nada al-Nashif expressed concern after Washington announced sanctions on the generals behind last week's coup in Myanmar.

The new US leader has ordered a review of the deal Washington cut with the Taliban last year, which promised the withdrawal of all foreign forces by 1 May in return for security guarantees from the militants.

The touring team will stay in a bio-secure environment and matches will be confined to two venues – SuperSport Park in Centurion and the Wanderers Stadium in Johannesburg.

Match, the group that includes several leading apps such as Tinder, Hinge and Meetic, says it added more than a million users in the last quarter of 2020, up some 12% to around 11 million worldwide.