A US Senate hearing on nuclear capabilities issued a warning about China on Wednesday, hours before US President Donald Trump was due to meet Chinese President Xi Jinping.Senator Roger Wicker, the Mississippi Republican who chairs the Senate Armed Services Committee, said in his opening statement that China has been engaged in an “unprecedented nuclear expansion” in recent years.China, Wicker said, had “rapidly constructed hundreds of new missile silos, expanded mobile missile and ballistic missile submarine forces and invested in long-range bombers”, and called this “a strategy designed to surpass the United States in the coming decade”.AdvertisementThe Chinese embassy in Washington…