Washington will keep pushing China to join a trilateral nuclear control deal with the US and Russia, but can’t compel it to do so, Secretary of State Marco Rubio said, citing “strategic stability” in China-US relations ahead of US President Donald Trump’s visit to China in April, despite long-term “irritants”.“We think ultimately, in the 21st century, for there to be a true arms control agreement, it has to involve China,” Rubio said during a press conference at a meeting of the Caribbean...