British Army Chief Warns Of Russia Threat
General Sir Nick Carter says the British Army's ability to respond to threats "will be eroded if we don't keep up with our adversaries".
The speech - approved by Defence Secretary Gavin Williamson - comes amid speculation of potential defence cuts.
The warning comes after Russia practised simulated attacks across northern Europe.
In the speech, which will take place at the Royal United Services Institute on Monday, Gen Carter will highlight Russia's new cyber warfare capabilities.
The Russian army conducted large scale military exercises last year, including simulated attacks across northern Europe, from Kaliningrad to Lithuania.
Gen Carter will also highlight the Russian army's long-range missile strike capability. While Russian forces were intervening in Syria, 26 missiles were deployed from a 1,500km (930 mile) range.
He will add that Russia is building an increasingly aggressive expeditionary force, which already boasts capabilities the British Army would struggle to match.
Potential military threats to the UK "are now on Europe's doorstep," Gen Carter said.
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