Tags: United States

Twitter Inc (TWTR.N) sued the U.S. Department of Justice on Tuesday, intensifying its battle with federal agencies as the Internet industry's self-described champion of free speech seeks the right to reveal the extent of U.S. government surveillance.

A private Los Angeles-area tutor was arrested and charged on Monday for illegally changing grades for three high school students, police said.

South Korea wants to discuss the reunion of families separated by the Korean War in talks expected soon with North Korea, the South's Unification Ministry said on Monday, after a surprise high-level visit by North Korean envoys at the weekend.