Oil. it is a finite resource
"Yellow Journalism" was largely responsible for swaying popular support of sensationalizing headlines and questionable facts.
Harsh and extremely cold winter was the main geographical factor that added to German losses at Stalingrad.
Russia is well-known for its cold winters and many people from Western Europe even nowadays complain about severe weather conditions while visiting this country. Thus, this is not surprising, that cold weather became a serious obstacle on the way of Germans.
Printing opinions that take away others rights