Thailand's constitutional court on Friday ruled that a general election held last month was invalid, deepening a political stalemate following weeks of opposition protests. The February 2 polls, called by Prime Minister Yingluck Shinawatra in an unsuccessful attempt to ease a months-old political crisis, have not yet been completed because of disruption by demonstrators. A court spokesman told reporters that the 6:3 ruling was reached on the grounds that voting was not held for the entire...