Owen Churchill from the SCMP US bureau and William Zheng from the SCMP China desk discuss landmark US sanctions announced over products sourced from Xinjiang. They analyse a year in US-China relations from the start of Joe Biden’s presidency and his promise of a change in style from Donald Trump’s Twitter-based diplomacy. From confrontations in Alaska and Tianjin to new ambassadors in Washington and Beijing, it's been a rollercoaster ride for Sino-US relations. For podcast reviews and news…