Not only negative news about some countries don't emerge in the Western society, but also positive news debunking the falsehoods and stereotypes about the "blamed" countries don't show up neither: https://theintercept.com/2019/08/14/trump-iran-worst-lies
A major problem of our global society is that public perception is biased towards the "winners" and we learn the truth, if we are lucky, about their negative impact long after the damage was done. Example: the US invasion on Iraq was based on the false narrative about the weapons of mass destruction. Again, there were some news outlets that were telling the truth, but it was ignored.
Though with the Syrian conflict dying down, I'd expect others like Yemen to get more attention by filling the "war" slot in media.