I don't think it is good for reporters or pundits to be equating competitive trade policy with a country being an "adversary". Competitor maybe, but not adversary.
The US and Iran are at war. The US are enemies with Iran. It is a military conflict. The US is not at war with any other country at this time and it is best to keep it that way.
Using words of war regarding trade relations is dangerous.
Yes naval blockades do cross the line of war versus tariffs and sanctions.
The US competes with many countries for influence and resources without needing to be adversaries.
A reporter questions rudely President Trump's foreign policy decisions and gets schooled:
Reporter: "Why are you so focused on doing things like this towards America's allies instead of doing things that target adversaries?"
Trump: "The Canadian officials have treated us very badly; they're nasty people. They charge our farmers 400% tariffs. They've been doing it for a long time...Canada treats us very badly...They feel entitled, and we can't have that."