The shockwaves from Donald Trump’s airstrikes against Iran’s nuclear programme continue to reverberate. China condemned the attack as violating the UN Charter and warned that it risked destabilising the Middle East, an area where Beijing has fast-growing economic and diplomatic links — indeed China is now the biggest buyer of Iranian oil, and after the strikes the US asked it to persuade Tehran not to cut off oil supplies from the Gulf. So will the attack change China’s policy in the Middle E...