Communication devices used by Lebanon's armed group Hezbollah detonated late Wednesday afternoon across the country's south and in the southern suburbs of the capital Beirut, killing at least 20 people and wounding 450, according to the Lebanese health ministry. The attack comes a day after exploding pagers killed 12 people in Lebanon and Syria, including two children, and injured around 2,800 others. Read our blog to see how the day's events unfolded.