Standard Chartered Bank is bullish on U.S.-China relations and expects ties between the two countries to improve in the next “12 to 24 months,” according to Eric Robertsen, chief strategist and global head of research at the bank. Even as U.S. President Joe Biden and his team are focused on improving domestic growth, they recognize it is critical to create conditions for global trade to thrive, Robertsen said in an interview with CNBC’s “Squawk Box Asia” on Monday.