A bomb struck a Bangkok military hospital on Monday and wounded 21 people, one seriously, three years to the day after the Thai Army seized power in the politically unstable kingdom. The small device, which police said was potentially deadly, went off near the VIP section of King Mongkut hospital as patients and their families waited for prescriptions, shattering glass and sending smoke into the corridors. Hospital director Saroj Keokajee said the "low intensity bomb" injured 21 people, among them retired military officers.