Greater Manchester Police believe Salman Abedi, 22, was the suicide bomber and report making at least one related arrest. ISIS claimed responsibility for the attack that killed at least 22.
The post-concert bombing is the 13th terrorist attack in Western Europe in a little over two years. This coincides with the rise of the Islamic State, which has been linked to most all the attacks.
Drone pilots and intelligence analysts who work with them may not be in physical danger themselves but "no doubt are war fighters" who experience psychological stress, says the Air Force.
Police say James Jackson traveled to New York City in order to "kill black men," a plan he carried out when he stabbed a stranger to death on a street corner. The terror charges were announced Monday.
Soon after the terrorist attack in London, the Parliament's Twitter account posted a short message restoring business as usual. NPR's Scott Simon remembers another time Brits met terror with calm.
Some Islamic institutions in the U.S. were founded by brotherhood members or sympathizers. Community leaders say ties with the Islamist movement were cut long ago; conservatives suspect otherwise.
Khalid Masood, 52, was born in Kent. The suspect was once investigated "in relation to concerns about violent extremism," British Prime Minister Theresa May said Thursday.
Secretary of State Rex Tillerson is hosting officials from 68 countries to discuss how best to take on ISIS. "As a coalition we are not in the business of nation-building or reconstruction," he said.
The two men were born in Germany but don't have citizenship; their families are from Algeria and Nigeria. German officials say it's the first time the government is taking such a step.