their development. Japan's aid to the ASEAN countries totaled US$1.9 billion in Japanese fiscal year (FY) 1988 versus about US$333 million for the United States during United States FY 1988. Japan was the number one foreign investor in the ASEAN countries, with cumulative investment as of March 1989 of about US$14.5 billion, more than twice that of the United States. Japan's share of total foreign investment in ASEAN countries in the same period ranged from 70 to 80 percent in Thailand to 20 percent in Indonesia. In the early 1990s, the Japanese government was making a concerted effort to enhance its diplomatic stature, especially in Asia. Toshiki Kaifu's much publicized spring 1991 tour of five Southeast Asian nations—Malaysia, Brunei, Thailand, Singapore, and the Philippines—culminated in a May 3 major foreign policy address in Singapore, in which he called for a new partnership with the Association of Southeast Asian Nations (ASEAN) and pledged that Japan would go beyond the purely economic sphere to seek an "appropriate role in the political sphere as a nation of peace." As evidence of this new role, Japan took an active part in promoting negotiations to resolve the Cambodian conflict. See also Japan–Vietnam relations Japan–Philippines relations Japan–Indonesian relations Greater East Asia Co-Prosperity Sphere – historic euphemism for the Japanese colonies in Southeast Asia References Further reading Hook, Glenn D. et al. Japan's International Relations: Politics, Economics and Security (2011) excerpt Southeast Asia History of Southeast Asia