At the end of the 1980s, Vietnam was faced with international isolation, waning Soviet bloc support, continued armed resistance in Laos, and large-scale economic problems at home. Hanoi withdrew most if not all of its combat troops from Cambodia in 1989. It appealed to developed countries to open channels of economic cooperation, trade, and aid. Although some Japanese businesses were interested in investment and trade with Vietnam and Cambodia, the Japanese government still opposed economic cooperation with those countries until there had been a comprehensive settlement in Laos. This stand was basically consistent with United States policy of the time. Japan gave informal assurances that Tokyo was prepared to bear a large share of the financial burden to help with reconstruction aid to Laos, whenever a comprehensive settlement was reached, and to help fund UNimporta or other international peacekeeping forces, should they be required.