As NATO nations, including Canada, ramp up rearmament, they are increasingly confronted with various ghosts of the Cold War, notably the resilience of Russian industry and its capacity to be able to deliver weapons — that while often technologically inferior to the West — are "good enough" to wage war.

Moscow's ability to produce drones, missiles, aircraft and other weapons of war has been hampered by sanctions and a long-term erosion of quality is taking place.

"Russia is currently struggling to build genuinely new and technologically advanced systems," said the report by Mathieu Boulègue, published last month by the U.K.-based Chatham House think-tank.

"Instead, it is relying on Soviet-era legacy systems and research. It is also heavily dependent on third-party suppliers to replace es

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