The chilling admission comes as Vladimir Putin refused to meet US Secretary of State Rex Tillerson during his trip to Moscow this week.
Tensions have continued to boil over after the US launched a tomahawk strike on a Kremlin-backed Syrian Government airbase last week.
Evgeny Buzhinsky, a retired Lt General in the Russian military, believes the superstates are now “teetering on the brink of war”.
Evgeny Buzhinsky warned of a new Cold War between the West and Russia
When we had the Cold War everything was much clearer and less dangerous
Speaking on Radio 4, he said: “The West can press Russia, but I don’t think the Russian Government or the Russian President will surrender under the pressure of the G7.
“The situation in Syria will deteriorate if the West continues to support radical Islamists the outcome will be sad – it will be much worse than in Iraq for example.”
A meeting of the G7 foreign ministers, including Boris Johnson, concludes in Italy today.
The British minister will ask the group to consider fresh sanctions against Russia and Syria in response to last week’s chemical attack.
However, Mr Buzhinsky warned any sanctions implemented by the G7 is only likely to intensify the situation further.
He continued: ”When we had the Cold War everything was much clearer and less dangerous – there were definite red lines, there were definite truths.
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“Now, after 20 years of the so-called friendship between the Russia and West, the situation is much worse, no truths or no red lines.
Countries that support and oppose the missile strikes in Syria
Mon, April 10, 2017
European countries have been broadly supportive so far as President Trump ordered missile strikes against a Syrian airfield from which a deadly chemical weapons attack was launched
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SYRIA OPPOSES: President Bashar al-Assad's office denounced the U.S. strike as 'reckless, irresponsible behavior.'
Meanwhile, China has deployed 150,000 troops to the North Korean border amid fears they could be overrun with fleeing citizens if the US sends in an airstrike.
According to reports, the Chinese are readying medical and backup units from its PLA forces at the Yalu River to prepare for any possible influx.
President Trump’s tomahawk attack on a Syrian airbase on Friday is reported to have also been a warning to the reclusive state, amid rising tensions between the two countries.
Speaking on state television, a North Korean foreign military official said: “Some forces are loud-mouthed that the recent US military attack on Syria is an action of warning us but we are not frightened by it.”