After the winter hiatus, Hitler’s generals wanted to focus their attack on Moscow again; however, Hitler decided that his forces would launch a full-scale offensive only in the south, toward the Don River, Stalingrad (now Volgograd), and the Caucasus oilfields. Hitler’s plan was to concentrate all available forces in the southern flank of the long front, destroy the front line Russian forces there, and then advance southeast, through the mountainous Caucasus region, to capture the rich oil fields on the Caspian Sea; and, also advance east, to Stalingrad, a major industrial and transportation center on the west bank of the wide Volga River, the main waterway of inner Russia, that runs all the way from north of Moscow to the Caspian Sea in the south.