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Verse 4= It is clearly describing a situation where Russia(Magog) will feel it is forced to invade Israel due to perhaps its current economic crisis and promises of riches that are to soon be found in Israel, hence the 'hooks in his jaw'. It goes on to describe a large array or soldiers of all kinds heavily armed.
This view was formed in full during the Cold War when the USSR on paper seemed to have the most powerful amry on the planet (on paper anyway). The USSR goes away! Now what? - they keep the Russia part even though Russia today can't fight its way out of a paper bag - nor will she be able to for a long time to come and invent these elaborate scenarios now that the old template is gone.