Earlier this month the National Intelligence Council released its Global Trends 2030: Alternative Worlds report — a document that comes out once per presidential administration — mapping out likely geopolitical trends over the next two decades or so. As usual, it’s a must-read, offering comprehensive analysis of the disparate factors that will drive global politics through 2030.

Further, the NIC took bold steps to correct some previous weaknesses in past reports. In the past the report nailed the “what” more often than the “when.” That is particularly the case with its treatment of the United States, for which “past works assumed U.S. centrality.” This time around the NIC sets an increasingly “multi-polar world” — which I call the G-Zero — as the backdrop of its report, acknowledging that the lack of global leadership has accelerated in the wake of the global financial crisis of 2008-09. America’s status as a “hegemonic power” is eroding, and no country is likely to take its place.

This multipolar world is the foundation for the rest of the NIC’s predictions. The report is organized around subsections that range in probability: There are the megatrends that are sure to have an effect, the game-changers that could go a number of ways, and the four potential worlds of 2030.

In my opinion, when it comes to probabilities for the future global order, the single biggest variable — both in terms of its importance and its potential variance — is China’s rise or lack thereof. If there are twin “gigatrends” that supersede all else, they are China’s trajectory and the multipolar world in which it is playing out.

China is mentioned more than 300 times in the report, and the NIC’s assertion that “the US-China relationship is perhaps the most important bilateral tie shaping the future” is dead on (though I’d cut the word “perhaps”). But despite China’s implicit impact on the report, the NIC doesn’t establish it as the twin pillar alongside the multipolar world it vividly describes. Nor do we get a full sense of how a host of negative China surprises could fundamentally alter the world of 2030 as we imagine it.