Here is a Nextbigfuture infographic with a projection of military spending in 2030.
This is mainly based upon IMF forecasted GDP projections to 2022 and then extrapolated to 2030. The 2016 military spending as a percent of GDP is assumed to still be used out to 2030. A country spending 2% of its GDP on its military or 5% of GDP is assumed to still be spending the same percentage in 2030.
Nextbigfuture believes the IMF GDP forecasts out to 2022 for Russia and Saudi Arabia could be high.
Also, China’s currency improved in 2017 and 2018 and has had strong GDP performance. Nextbigfuture used these adjustments for an increased forecast for China’s GDP in 2030.
Most of the countries are growing at near the same pace. China and India have more growth and so have bigger economies and more military spending in 2030.
The United States still dominates world military spending.
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
Known for identifying cutting edge technologies, he is currently a Co-Founder of a startup and fundraiser for high potential early-stage companies. He is the Head of Research for Allocations for deep technology investments and an Angel Investor at Space Angels.
A frequent speaker at corporations, he has been a TEDx speaker, a Singularity University speaker and guest at numerous interviews for radio and podcasts. He is open to public speaking and advising engagements.