The article highlights the problems of attracting foreign direct investment in the conditions of war and the postwar period, which should be defined for the country as a period of investment uncertainty. It was emphasized that for Ukraine, which actively attracts investments from abroad, such a situation leads to the loss of opportunities for economic development and deterioration of competitiveness and can also affect the general decrease in the rate of economic growth. The volume of investment in the national economy before the war had unstable dynamics, but with the beginning of the war, the fall in investment became critical. It was noted that political instability, economic turbulence, changes in government policy, geopolitical conflicts, technological changes, or natural disasters are among the causes of investment uncertainty. It was pointed out that the result of investment uncertainty may be the delay or rejection of the implementation of investment projects. It was determined that to overcome uncertainty in the investment sphere, it is necessary to develop effective strategies for attracting investments, which is currently the most difficult task. Most of the countries that are large exporters of foreign direct investments, such as the USA, Germany, Great Britain, Japan, and others, have already aided Ukraine since the beginning of the war, so further attracting investments and their involvement in the restoration of the national economy in the post-war period will be problematic. It was emphasized that when building investment strategies, the principal things are: understanding modern investment trends (for Ukraine, in this context, it is possible to attract investments per the implementation of the Sustainable Development Goals); ensuring effective management of investment risks (insurance of direct foreign investment during wartime is especially relevant); transparency of government policy and regulatory measures, as well as the creation of a favorable business environment that will form the basis of investment stability and reliability