The Korean War had once again turned to the favor of the United Nations forces and even the combined forces of China and North Korea could not stop the northern tide of war. That was when China asked for aid from Russia and that aid came in the form of Russian air force and anti-air divisions. That signaled a new phase in the war. No longer was it merely a fight for the destiny of a single small nation. The Cold War between the socialist and capitalist ideologies had begun.