As Londoners paused to remember victims on the 10th anniversary of the july 7th transit bombings on Tuesday, police and security experts warned that terrorism remains a threat due to the "wicked cult" of ISIS.
The British capital's world-famous red buses were expected to pull over as the city observed a minute's silence at 11:30am (6:30 a.m. ET) — one of a series of ceremonies marking the suicide bombings that killed 52 people and seriously wounded hundreds more during the morning rush hour.