"Thai Prime Minister Abhisit Vejjajiva has appeared on national TV to reject a demand from demonstrators that he quit by midday and call elections. Anti-government protesters in Thailand have gathered outside an army barracks where Mr Abhisit has been holed up. The rally, led by supporters of ousted ex-PM Thaksin Shinawatra, is one of the largest in recent years. Some 50,000 soldiers and police have been deployed in Bangkok, although the protests have been peaceful so far. Thousands of demonstrators have gathered outside the headquarters of the 11th Infantry Battalion barracks in the north of the Thai capital. "