Hong Kong stock exchange Chief Executive Charles Li said on Tuesday the bourse was in official talks with Guangdong authorities on metals warehousing, a major step towards its long-held aim of expanding in mainland China. SEE MORE London base metals were mixed in early trade on Tuesday amid concerns that an escalating U.S.-China trade tension could hurt the global economy, but copper and nickel on the Shanghai Futures Exchange rebounded from the previous session's slump. SEE MORE Chinese Vice Premier Liu He will visit the United States this week for trade talks, Beijing said on Tuesday, playing down a sudden increase in tensions after U.S. President Donald Trump vowed to impose new tariffs. SEE MORE Trust is an economic variable in short supply among the nuclear behemoths jostling for global dominance. But without an architecture of verifiable trust, codified in enforceable international rules and regulations, world trade and investments would dry up. SEE MORE Less than a month ago in the imposing setting of the IMF’s HQ2 building in Washington DC, Gita Gopinath, its new chief economist, had a bleak message for the world. SEE MORE