August Hanning, Germany's former head of national intelligence, was arrested on Tuesday by German authorities on charges of espionage and treason.

A 22-year-old from London was the seventh person to be arrested by the counterterrorism police investigating an incident at R.A.F. Fairford last month.

The pilot who tried to bring down an Israel-bound flight had been planning a 9/11-style attack by crashing into the country’s main airport in Tel Aviv, a Middle Eastern official has told NBC News. Identified by NBC News as Hamman al Hamami,

A Belgian-American physics professor at the University of Wisconsin won the Nobel Prize in physics Tuesday for his work in studying neutrinos.

U.S. Secretary of State Marco Rubio has sought to reassure NATO ally Iceland that President Donald Trump's administration has no designs on the island but shares its concerns about Arctic security

Russian air defenses intercepted nearly 900 Ukrainian drones overnight over multiple regions of the country, as well as the occupied Crimean Peninsula and the Sea of Azov, the Defense Ministry in Moscow said Tuesday.

U.S. Secretary of State Marco Rubio said his department is monitoring the death of a Russian lab worker who may have died from the pneumonic plague.

Spain has lifted the arrest warrant for Catalan separatist leader Carles Puigdemont, allowing the politician to return home without fear of detention for the first time in nearly a decade