Heavy snowfall and plummeting temperatures shut schools and shops in the Greek capital on Monday, with many public services and businesses switching to remote working.
Traffic was halted on some central roads and on a national road connecting Athens to central Greece, as storm Barbara swept across the country, blanketing the capital.
Some metro stations close to the city's international airport were also shut and train routes to the northern city of Thessaloniki were suspended.
Authorities urged the public to avoid non-essential travel.
Fire brigade rescue crews had evacuated four people whose car was stuck in the snow in the Athens suburb of Aspropyrgos, according to state TV ERT.
The cold snap was expected to last until Tuesday, gradually affecting eastern and southern regions, including the island of Crete.
Heavy snow is rare in the Greek capital but the country has now been hit by extreme weather for a third consecutive winter. Until Monday's snow, winter in Greece has been unusually mild so far this year.
The US State Department said on Friday it has approved a sale worth $151.8 million to Israel for munitions and munitions support, without submitting it for congressional review.
Flash floods across Nairobi overnight has left at least 23 people dead, authorities said, adding that dozens of cars were swept away and flights at East Africa's biggest airport disrupted.
Russia launched a barrage of drones and missiles at Ukraine overnight on Saturday, damaging infrastructure and killing at least 10 people in the northeast city of Kharkiv, Ukrainian officials said.
US President Donald Trump demanded Iran's 'unconditional surrender' on Friday, a dramatic escalation of his demands a week into the war he launched alongside Israel, which could make it more difficult to negotiate a swift end to it.
A three-year-old party led by rapper-turned-politician Balendra Shah looked set to sweep Nepal's general election on Friday, trouncing established rivals in a result analysts likened to a "tsunami".
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