Tougher lockdown measures have been introduced in parts of northern England after a rise in the rate of novel coronavirus transmission, raising concerns over a second wave.
Britain reported its highest number of new COVID-19 infections in more than a month on Thursday, as ministers warned more quarantine restrictions were possible.
Around 4 million people were ordered not to mix with other households in Greater Manchester, the biggest city in northern England, parts of West Yorkshire and East Lancashire, though they can still go to work.
Those breaking the rules will face a fine of 100 pounds.
"The problem with this virus is that it thrives on the social contact which makes life worth living," Health Secretary Matt Hancock told Sky. "I totally understand the human impact of this but unfortunately that is how the virus passes on."
Asked by the BBC if the UK was now entering a second wave, Hancock said: "It is not yet and we are absolutely determined to take the action that is needed."
The measures were introduced hastily at the start of Eid al-Adha.
Israel said it carried out a warning strike against an extremist group that was preparing to attack Druze in Syria, following through on its pledge to protect the minority group as violence spread in Druze areas near Damascus on Wednesday.
Swarms of Russian drones attacked the Ukrainian cities of Kharkiv and Dnipro late on Tuesday, killing at least one person and injuring at least 46, officials said.
At least 14 people died in the eastern Indian city of Kolkata late on Tuesday when a fire blazed through a six-storey hotel in a congested neighbourhood, authorities said.
Spain and Portugal switched their power back on after the worst blackout in their history, though authorities offered little explanation for what had caused it or how they would prevent it from happening again.
The head of Israel's domestic intelligence agency, Ronen Bar, announced he will resign on June 15 amid pressure from Prime Minister Netanyahu and ongoing legal proceedings.
President Donald Trump touted what he called a series of major economic wins and forcefully attacked Democrats during a rally in Michigan on Tuesday to commemorate his first 100 days in office.
Canadian Prime Minister Mark Carney's Liberals retained power in the country's election on Monday, but fell short of the majority government he had wanted to help him negotiate tariffs with US President Donald Trump.