Mao endorsed the Kim — Stalin plan, and Stalin wired consent on the 16th. On 25 June the North Korean army smashed across the 38th Parallel. Mao, it seems, was not told the exact launch day. Kim wanted Chinese troops kept out until they were absolutely needed. Stalin, too, wanted them in only when America committed large numbers of troops for the Chinese to “consume.”
TRUMAN REACTED fast to the invasion. Within two days, on the 27th, he announced that he was sending troops into Korea, as well as upping aid to the French in Indochina. Furthermore, he now reversed the policy of “non-intervention” towards Taiwan. It was thanks to this new US commitment that neither Mao nor his successors were ever able to take Taiwan.
By early August, the North Koreans had occupied 90 percent of the South, but the US poured in well-armed reinforcements, and on 15 September landed troops at Inchon, just below the 38th Parallel, cutting off much of the North Korean army in the South, and positioning itself for a move into the North. On the 29th Kim sent an SOS to Stalin, in which he asked for “volunteer units” from China.
On 1 October, Stalin signaled to Mao that the moment had come for him to act, dissociating himself shamelessly from any responsibility for defeat: “I am far away from Moscow on vacation and somewhat detached from events in Korea …” After this barefaced lie came his real point: “I think that if … you consider it possible to send troops to assist the Koreans, then you should move at least five — six divisions towards the 38th Parallel … [These] could be called volunteers …”
Mao leapt into action. At 2:00 AM on 2 October he issued an order to the troops he had already moved up to the Korean border: “Stand by for order to go into [Korea] at any moment …”
Poverty-stricken, exhausted China was about to be thrown into war with the USA. It seems it was only now, at the beginning of October, that Mao convened the regime’s top body, the Politburo, to discuss this momentous issue. The Politburo was not a team to make important decisions, but to serve as a sounding-board for Mao. On this occasion, he specifically invited differing views, because of the colossal implications of war with America. Nearly all his colleagues were strongly against going into Korea, including his No. 2 Liu Shao-chi and nominal military chief Zhu De. Lin Biao was the most vocal opponent. Chou En-lai took a cautious and equivocal position. Mao said later that going into Korea was “decided by one man and a half”: himself the “one” and Chou the “half.” Among the huge problems voiced were: that the US had complete air supremacy, and artillery superiority of about 40:1; that if China got involved, America might bomb China’s big cities and destroy its industrial base; and that America might drop atomic bombs on China.
Mao himself had been losing sleep over these questions. He needed a functioning China as the base for his wider ambitions. But Mao gambled that America would not expand the war to China. Chinese cities and industrial bases could be protected from US bombing by the Russian air force. And as for atomic bombs, his gut feeling was that America would be deterred by international public opinion, particularly as Truman had already dropped two — both on an Asian country. Mao took precautions for himself, though. During the Korean War, he mostly holed up in a top-secret military estate outside Peking in the Jade Spring Hills, well equipped with air-raid shelters.
Mao was convinced that America could not defeat him, because of his one fundamental asset — millions of expendable Chinese, including quite a few that he was pretty keen to get rid of. In fact, the war provided a perfect chance to consign former Nationalist troops to their deaths. These were men who had surrendered wholesale in the last stages of the civil war, and it was a deliberate decision on Mao’s part to send them into Korea, where they formed the bulk of the Chinese forces. In case UN troops should fail to do the job, there were special execution squads in the rear to take care of anyone hanging back.
Mao knew that America just would not be able to compete in sacrificing men. He was ready to wager all because having Chinese troops fighting the USA was the only chance he had to claw out of Stalin what he needed to make China a world-class military power.