An intelligence forecast being prepared for the next president on future global risks envisions a steady decline in U.S. dominance in the coming decades, as the world is reshaped by globalization, battered by climate change, and destabilized by regional upheavals over shortages of food, water and energy.

The report, previewed in a speech by Thomas Fingar, the U.S. intelligence community’s top analyst, also concludes that the one key area of continued U.S. superiority — military power — will “be the least significant” asset in the increasingly competitive world of the future, because “nobody is going to attack us with massive conventional force.”

As described by Fingar, the intelligence community’s long-term outlook has darkened somewhat since the last report in 2004, which also focused on the impact of globalization but was more upbeat about its consequences for the United States. The new view is in line with that of prominent economists and other global thinkers who have argued that America’s influence is shrinking as economic powerhouses such as China assert themselves on the global stage. The trend is described in the new book “The Post-American World,” in which author Fareed Zakaria writes that the shift is not about the “decline of America, but rather about the rise of everyone else.”

In the new intelligence forecast, it is not just the United States that loses clout. Fingar predicts plummeting influence for the United Nations, the World Bank and a host of other international organizations that have helped maintain political and economic stability since World War II. It is unclear what new institutions can fill the void, he said.

Nearly absent from Fingar’s survey was the topic of terrorism. Since the last such report, the intelligence community has projected a declining role for al-Qaeda, which was deemed likely to become “increasingly decentralized, evolving into an eclectic array of groups, cells, and individuals.” Inspired by al-Qaeda, “regionally based groups, and individuals labeled simply as jihadists — united by a common hatred of moderate regimes and the West — are likely to conduct terrorist attacks,” the 2004 document said.