Impact of economic sanctions on net commodity-producing and net commodity-consuming countries

The war in Ukraine has had a marked economic impact. However, since Russia is a net producer of important commodities, the impact of sanctions on its economy was less than expected. But what would happen if there was a war involving a country that was a net importer of commodities? In the case of a possible China-US conflict over Taiwan, the impact on the world economy would be different, with a deeper recession around the world, but the impact on the Brazilian economy would still be positive on account of the possibility that would remain of agricultural exports to China