Joe Lay

I think these sorts of regulations, they really don't help with the atmosphere ahead of meetings like that of Xi and Trump.

The two of them have agreed to a trade truce and they were supposed to not be introducing more export controls.

So this really escalates the tension ahead of that summit and it's going to be up to the two leaders

to try to overcome these escalating tensions and to see whether they can extend the trade truce, which expires in October.

Joe Lay is the FT's Beijing Bureau Chief.

Thanks, Joe.

Thanks very much, Mark.