The United States on Friday called on dozens of countries to work together to combat synthetic drugs, but China declined an invitation to attend.
President Donald Trump has repeatedly hit out at China for failing to curb the export of illegal fentanyl to the United States. The powerful painkiller is the primary synthetic opioid available in the US, a class of drug that was responsible for almost 32,000 overdose deaths last year.
China on Friday vowed to fight back against US President Donald Trump's abrupt decision to slap 10% tariffs on the remaining US$300 billion in Chinese imports, a move that ended a month-long trade truce.