I might have believed that a couple weeks ago. Mexico and Canada put a show on for the him about the tarrifs and they're still set to be in place tommrow. Why would anyone else play along now?
News headlines in 6 months "Trump announces trillion dollar free-trade deal with Russia" that will be "totally fair" and not "taking advantage of the US" like Canada, Mexico and the EU.
Still it might be cheaper to just give him worthless wins with no follow thru.