Thailand's embattled prime minister, Abhisit Vejjajiva, has declared a state of emergency after protesters caused him major embarrassment by forcing the cancellation of a major Asian summit in Bangkok. Unfortunately for Veijjajiva, it's not clear whether the army will follow though on his order for "tough measures" to put down the protests. Under the state of emergency, the government prohibits gatherings of more than five people, may censor the media and will use the army to restore order, the BBC reports. Nevertheless, protesters continue making their voices heard and have commandeered two military vehicles. Veijjajiva's credibility in this crisis is low: He himself came to power when yellow-shirted protesters ran off his predecessor.