At least five bomb threats were reported on Tuesday against flights of five airliners leaving or landing in the US.
The US city of Baltimore has recorded 43 deaths from homicide in May, the highest monthly murder toll since August 1972.
US Department of Homeland Security Secretary Jeh Johnson has reassigned the acting administrator of the Transportation Security Administration.
A woman at the center of a high-profile gender bias lawsuit against an elite Silicon Valley venture capital firm filed an appeal on Monday of the jury verdict against her.
South Carolina Senator Lindsey Graham, a noted defense hawk, announced on Monday his presidential bid with national security as a pivotal issue.
Researchers in the drought- ravaged state of California are turning to Melbourne to learn more about effective strategies to combat drought, especially water- saving techniques.
US Secretary of State John Kerry has delayed his trip back to the United States to stay in a Swiss hospital overnight after breaking his leg in a bicycle crash Sunday.
At least ten people were injured by a mechanical crane in an accident at a construction site in New York's midtown Manhattan on Sunday, city officials said.
Former Delaware Attorney General Beau Biden, son of US Vice President Joe Biden, died on Saturday after battling brain cancer, the vice president said. He was 46.
Taking up parts of the 100th, 101st, and 102nd floor of the One World Trade Center building, the One World Observatory opened to the public Friday for the first time.
Responding to Carter's words, Tseng said most of China's maritime trade must go through the South China Sea. In this regard, China has no intention to disrupt the freedom of navigation.
A leading US nuclear envoy has called for "the unity and cooperation" of all parties to advance the denuclearization of the Korean Peninsula.