Donald Trump’s unexpected and unwanted victory in the presidential election is horrifying American allies around the world. Since Trump suggested repealing the alliance network worldwide, and even demanded some allies like Japan, South Korea, and Saudi Arabia to nuclear arm by themselves, people fear New Global Disorder resulting from unilateral abandonment American hegemony. Some people in Japan and Europe argue that that the Trump shock is an opportunity to rethink the postwar security framework, and explore self-reliant foreign and defense policies. While foreign policy pundits are critically concerned with unpredictable insecurity under the Trump presidency, Japanese nationalists are overjoyed with his suggestion to pull out US troops from Japan, as they want to seize an opportunity to wipe out “postwar political submission to the United States” (“Japanese Nationalists Increasingly Welcome Trump’s Ascendency”; Yahoo News Japan; March 27, 2016). More rational and somber voices emerge from Europeans. Matteo Garavoglia, an Italian and German dual citizen fellow at the Brookings Institution argues that Europe develop independent defense capability, deepen mutual security cooperation within the region, and explore partnerships for global stability with major democracies beyond Europe, like Australia, Brazil, Canada, Japan, and India (“Never waste a crisis: Trump is Europe’s opportunity”; Brookings Institution; November 10, 2016).The problem is, Japan does not join any multilateral regional security organizations, because Asia is still too diversified in terms of culture, history, and political economic development. Also, Japan still has territorial disagreements with some potential security partners such as South Korea and Taiwan. Therefore, Japan’s so-called self-reliant national security policy, would simply result in isolation from the world. While nationalists are overjoyed to imagine their long awaited dream of the resurgence of the Imperial Japan, it takes quite a long time to build up truly self-reliant military power, even if Japan is willing to increase defense spending rapidly. Weapons are made to order, and they do not arrive to the customer as soon as payments are made. Also, soldiers need training to use these weapons. Remember how Iraq felt uneasy with the Obama administration, as they delayed to deliver F-16 fighters and train Iraqi pilots, when ISIS was almost taking over Baghdad (“From Iraq to Syria, splinter groups now larger worry than al-Qaeda”; Washington Post; June 10, 2014). From this point of view, an independent nuclear deterrence against North Korea that Trump once suggested is ridiculous.The problem is not just defending the Japanese a territory including Senkaku Island from China. Without associating with the United States, it is hard for Japan to edge out Chinese influence from Asia, both in terms of geopolitics and business. While Japan appeals universal value of rule based international relations, Asian nations more or less embrace China as an irresistible rising power. In the economy, high quality of Japanese goods and services does not necessarily charm Asian customers over inexpensive and aggressively marketed Chinese ones. A self-reliant Japan would be so vulnerable in Asia, even though it could barely defend its own territory from China. Asian neighbors are not unanimous, regarding the threat of China. Some like Cambodia, Laos, and Myanmar are pro-Chinese. Even supposedly pro-Western and pro-Japanese countries can appease China. It is vital for small powers to pursue national survival among competing great powers, rather than to uphold lofty ideals. Thus, they sometimes embrace “irresistible” rise of China as seen in AIIB membership and Indonesian super express railway. Nationalists' dream of a Japanese-led Greater Asia Co-prosperity Sphere is simply absurd and dangerous.Despite Trump’s isolationist election promise, Asia is historically a natural sphere of American influence even before the disappearance of the frontier in 1890. This is the vital reason why Matthew Perry’s fleet was sent to Japan in 1853 and 1854. That is starkly in contrast with America’s engagement in the Middle East, which was inherited from British imperial legacy. If Trump were to be a realist in foreign policy, he must understand such deeply embedded US presence in Asia, rather than to adhere to myopic profit and loss mindset of a typical businessman. However, Robert Kaplan at the Center for a New American Security criticizes that Trump does not understand realism. He says that Trump has no accurate vision of America’s role and position in the world, and he is hardly dedicated to defending allies and harness American power for global stability (“On foreign policy, Donald Trump is no realist”; Washington Post; November 11, 2016). During the election, what Trump remarked, were utterly contrary to Kaplan, and extremely obsessed with predatory zero sum ideas like racketeers. That has spurred worries among foreign policy pundits both in the United States and abroad.The Trump shock is by no means an opportunity for Japan to end “servile” relations with the United States, and adopt “independent” and “proud” foreign policy. Then, how should we manage the crisis? Above all, we have to understand Trump’s fundamental thinking pattern. According to Professor Emeritus Gerald Curtis of Columbia University, Trump’s making a deal obsession comes from negotiation techniques of a real estate developer, that is, to show maximum demands at first in order to explore how much the counterpart can make compromises. Bearing this in mind, we need to think of domestic channels to manage uncertainties of the Trump presidency. Curtis comments that checks and balances through the Congress, the media, think tanks, and the bureaucracy at the State Department and the Pentagon shall not approve of annulling the alliance with Japan. Also, he argues that fundamental national interest will not change whoever the President is (“Trump couldn't change Asian policy even if elected, Columbia professor says”; Nikkei Asian Review; November 8, 2016). In addition, we must work with like-minded Western democracies, and find common resolutions with Washington élites. Fortunately, poorly educated Trump supporters in the election can hardly have influences on policy interactions at this level. Also, a complete beginner in politics, Trump will need help from renowned experts when he finds himself incompetent to fix the problem. Nothing can control an erratic president perfectly, but we must explore every means.