The closely watched IHS Jane's Annual Defence Budgets Review said military budgets this year would inch up by 0.6 per cent, after years of falls brought on by lower spending in the West.
"We have seen substantial increases in defence spending from countries like Russia, China, India, Saudi Arabia, and Oman over the past two years," said Paul Burton, Director of IHS Jane's Aerospace, Defence & Security.
Already, spending in Russia last year shot to USD 68 billion, putting it ahead of Britain and Japan.
Spending by superpower China last year was USD 139 billion, with only the United States expending more defence. In 2015, the study said military spending in China will outweigh that of Britain, France and Germany combined.
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Expenditure on weapons and armies throughout Asia, which rose steadily since 2009, is fueled by heightened tensions between regional powerhouses China and Japan over islands in the East China Sea.
Middle East rivalries, especially as regional players choose sides in the murderous Syria conflict, has increased military spending there.
"We have seen a rapid acceleration of defence spending in the Middle East since 2011 ... Oman and Saudi Arabia, in particular, have seen rapid growth of over 30 per cent between 2011 and 2013," said Fenella McGerty, a senior analyst at IHS Jane's.
Military expenditure by the United States still towers over the rest of the world's, but is expected to continue its steady fall.
Pentagon outlays have been cut due to the winding down of wars in Iraq and Afghanistan and political bickering in Congress over the government spending.