"Imperialist nations like the US and its allies..." So, Russia is not an imperialist nation? Do you know any post-WWII history re: the expansion of Russian control over Eastern Europe? Let's review Trump's bro' relationship with Putin, and Russian funding of Trump enterprises, and one loose lipped Trump child noted. When asked about how western banks stopping loans to the crooked Trump machine, he replied the family didn't need Western banks because they had Russian oligarchs. Putin's excursions have been fueled by Trump's cozying up to Russian money and destroying Western confidence in US support.
We have our flaws here, but suggesting one side's behavior arises because of US imperialism misses most of world history. Putin is reported to be worth 80 billion dollars by intelligence services worldwide--he's trying to protect his own backside.