What is the “polar vortex”, which causes an extreme cold snap in the United States and Canada? – The HuffPost

The northeastern United States and eastern Canada under historic polar cold

War in Ukraine, live: the United States announces military aid of more than 2 billion dollars – Le Monde

Antony Blinken postpones his visit to China after the flight over the United States by a spy balloon – Le Figaro

United States: Lowest unemployment rate since 1969

Chinese “spy balloon” in the United States, Borne defends its reform and Macron warns Iran

A Chinese spy balloon flies over the United States, Canada evokes “a second potential incident”

What we know about the mysterious "spy balloon" Chinese spotted in the sky of the United States – BFMTV

Chinese spy balloon flies over United States