Will latest trade ‘speed bump’ slow China-US ties, or even stop Xi-Trump summit?

Beijing and Washington’s latest tit-for-tat measures could test ties, but observers say they are little more than a “speed bump” on the road to a potential summit between presidents Xi Jinping and Donald Trump.

China’s Ministry of Commerce sanctioned seven US entities and tightened export controls on drones and related technologies on Wednesday, citing the need to “safeguard national security”.

The ministry separately launched a national security investigation into imported printing and copying...