@Moto_Chagatai
European media, and European people, care because it reminds us that the threat of Russia is real.

US media, and Americans, care because:
1) NATO does compel USA to intervene in Europe in case Putin doesn't stop at Ukraine, but more importantly
2) most American families do come from the European continent, some maybe still have ties here, so the sentimental connection of the average American is stronger than to the Middle East for example.
I'm sure though that you'll find random Muslims that absolutely do care about Yemen.