US executive intervention into steel market

So the government of the number one economy in the world continues its dash towards protectionism by blocking the sale US steel to Nippon.

Surely inefficient allocation of resources has to come back to bite the US economy over the next ten years.

My question to you all is, does the US expect to harm other economies more than its own through its protectionism? This seems like quite the risk.

China is hurting at present. Russia is cooked. Germany is stalled. The UK is going backwards. India is doing ok.

Anyway I won’t list every economy but is this some protectionist game theory? These economies will evolve. China might pull the war lever if the economic ones stop working. Africa is likely to really start kicking soon.