What We're Following This Morning

Trading in Chinese stocks halted: The circuit-breaker was automatically triggered after stocks plummeted 7 percent in less than 30 minutes of trading. The markets did not reopen. In response, European markets slid 3 percent, on average, and Dow futures were down as well. Update: More here

South Korea responds to North’s test: Seoul said it would resume anti-North Korean broadcasts, which Pyongyang considers an act of war. As we reported yesterday, there’s much skepticism over the North’s claim that it tested a hydrogen bomb.

Anniversary of attacks on Charlie Hebdo: It’s a year since two Islamist militants attacked the satirical publication’s offices in Paris and killed 17 people, including some of its most prominent artists and writers. Charlie Hebdo published an anniversary issue on Wednesday to mark the event, and President Francois Hollande unveiled a plaque in memory of the victims of the attack.