Russia spends $65.and is ranked no 4 in the world, behind India and China

The Top 10 Military Spenders
Rank        Country        Military Spend 2019 ($B)
#1        United States        $732.0
#2        China        $261.0
#3        India        $71.1
#4        Russia        $65.1
There would appear to be no reason that any of us know as to why Russia has invaded, none of us are informed as to what goes on behind the scenes., that information is highly classified
What is clear to me is that all the time billions are spent on military, there will be a temptation for countries with large expenditure to use it.