The news is in competition with every other part of the entertainment industry, and so they have to generate endless novel sensation in order to grab eyeballs for a few monetizable moments. As ordinary people aren't very interested in reality but just want to gawp at spectacle, this means they become bored with anything that lasts longer than their brief attention spans. Ukraine is "old news" for ordinary people and so the industry must look elsewhere. Fortunately, there are always storms, celebrity gossip, mass shootings (in the USA, though not in civilized nations), airplane crashes, and so the spew of sensationalist context-free nonsense goes on forever. But none of it actually tells us much about reality, so it is best ignored in favor of spending time hunting out reliable information from sources that don't get their funds primarily from ad revenues.