When was this? I have an impression of something like this happening, but I don't know the story. Wasn't he also a visiting prof at Peking U or Tsinghua at one point (though I can't date it from google)? I also don't think he was as hawkish before as he is now, at least out in the open. I'm surprised he's not hiding it anymore.He was later exposed as two faced by domestic media when he called out China officials as rats for killing his climate change deal, behind closed door. But this story was not widely circulated internationally so it kinda passed by.
