I don't think these trade tensions are going away anytime soon. While many of us might think of increasing protectionism as a huge backward step for the world, President Trump isn't concerned about our opinion. He's playing to the voters that put him where he is.
According to a recent survey by Pew Research, the majority of Americans are against further tariffs. However, among Republican voters a whopping 73 per cent think more tariffs will be good for the US. This is the group that Trump cares about, and in their eyes he's doing a great job.
The US is embroiled in a number of trade skirmishes at present, most importantly with China. An escalation of these disputes would impact global economic growth at a time when the recovery remains fragile in many respects.
The initial round of tariffs would have probably had a negligible impact. However, the stakes were raised with the announcement another US$200bn of Chinese imports might also attract them. The tough talk has continued since then, with the President now saying he's willing to go further still.
It's extremely difficult to assess where this could all end up. Should China retaliate in kind to what's currently proposed, most estimates suggest this could knock around half a per cent off global growth. If things go further, the impact gets larger.