Breakthrough or breakdown - G20 sets trade war turning point

PARIS (Reuters) - The United States and China have in the coming week what may be their last chance to broker a ceasefire in an increasingly dangerous trade war when their presidents meet in Buenos Aires.With global growth increasingly suffering from frictions between the two biggest economies, tensions will come to a head when Donald Trump and Xi Jingping meet on the sidelines of a G20 summit in Argentina.Washington is set to raise tariffs on $200 billion worth of Chinese imports to 25 percent..