China sees THAAD as a move to break region's balance: analyst China sees US deployment of the THAAD missile-defence system in South Korea as a move to break the strategic balance in north-east Asia, an analyst says. The Unites States military announced that it had begun deploying the THAAD system on Monday, after North Korea launched four missiles that it said were part of a training exercise for a strike on US bases in Japan. IMAGES AND SOUNDBITES