China says it will “fight to the end” and take countermeasures against the United States to safeguard its own interests after President Donald Trump threatened an additional 50% tariff on Chinese imports. The Commerce Ministry said Tuesday the U.S.‘s imposition of “so-called ‘reciprocal tariffs’” on China is “completely groundless and is a typical unilateral bullying practice.” Trump’s threat Monday of additional tariffs on China raised fresh concerns that his drive to rebalance the global economy could intensify a financially destructive trade war. Stock markets from Tokyo to New York have become more unstable as the tariff war worsens.