The operation, which senior Iraqi officials had been signaling for weeks, is considered so important by the Iraqi government that Prime Minister Nuri Kamal al-Maliki, who went to Basra on Monday, intended to personally direct the fighting, several Iraqi officials said.NY Times

We’re exposing parts of the capital markets that most of us had never heard of Ethan Harris, a top Lehman Brothers economist.

So while language isn’t a requirement for all thought, it most definitely appears to be a requirement for some thought. Newton, A.M., Villiers, J.G. (2007). Thinking While Talking: Adults Fail Nonverbal False-Belief Reasoning. Psychological Science, 18(7), 574-579. Cognitive Daily.