Gold rallied 2 percent on Monday as investors turned to the safe-haven metal amid escalating conflict between Russia and Ukraine and renewed threats by US President Donald Trump to double tariffs on imported steel and aluminium. Trump said on Friday he planned to raise tariffs on imported steel and aluminium to 50 percent from 25 percent local time, prompting the European Union Commission to warn that Europe was prepared to retaliate. Tim Waterer, chief market analyst at KCM trade, said: "With t...