In reaction to the coronavirus outbreak, the Chinese government has imposed a quarantine on the city of Wuhan and 15 other cities in Hubei province, affecting an estimated 57 million people.

SOURCE: "The Novel Coronavirus Outbreak," by CSIS's Stephen Morrison, Jude Blanchette, Scott Kennedy, and Stephanie Segal.

Arctic snow and sea ice cover has decreased by approximately 13% every decade since the 1970s.

SOURCE: "UN Report Paints a Bleak Outlook for the World’s Oceans and Coastal Areas," by CSIS's Whitley Saumweber and Sarah Ladislaw.

The Sahel region of Africa has experienced a sharp rise in violent extremism, increasing from 180 incidents in 2017 to approximately 800 in the first ten months of 2019.

SOURCE: "Politics at the Heart of the Crisis in the Sahel," by CSIS's Judd Devermont.

A crowd of approximately 1.3 million people attended IRGC General Qasem Soleimani's funeral in Tehran on January 6.

SOURCE: "Signposts of Struggle: Iran’s Enduring Protest Movement," by CSIS's Danika Newlee, Seth Jones, and Joe Bermudez.