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National Security Adviser H.R. McMaster spoke at the Munich Security Conference Saturday and said the U.S. "will expose and act against those who use cyberspace" to spread disinformation.
Sebastian Widmann/Getty Images
Students sit in an open area after their school was evacuated in Veracruz, Mexico, on Friday, after a magnitude 7.2 earthquake. Later Friday, 13 people died after a helicopter surveying the damage near the epicenter crashed.
Mohammed Amin shows a picture of his 7-year-old daughter, Zainab Ansari, in Kasur, Pakistan, on Jan. 18. On Saturday, a 24-year-old local man, found guilty in her murder, was sentenced to die.
In this July 10, 2014, photo, Bobby Bostic is photographed in the visitation room at Crossroads Correctional Center in Cameron, Mo. A former St. Louis judge who sentenced Bostic, then a teenager, to 241 years in prison, says she regrets her ruling and is asking the U.S. Supreme Court to give him the opportunity for reform.
Robert Cohen/St. Louis Post-Dispatch via AP
Smallpox virus, colorized and magnified in this micrograph 42,000 times, is the real concern for biologists working on a cousin virus — horsepox. They're hoping to develop a better vaccine against smallpox, should that human scourge ever be used as a bioweapon.
Chris Bjornberg/Science Source
In this file photo taken on April 19, 2015, a women enters the four-story building known as the "troll factory" in St. Petersburg, Russia. The U.S. government alleges the Internet Research Agency started interfering as early as 2014 in U.S. politics, extending to the 2016 presidential election.