What we see now is US President Trump against the most fanatic and evil of ideologies the world has ever witnessed.
President Trump was possibly too naive, i.e. not fully understanding the scope of Mr. Obama's treason*.
* The word 'treason' is perhaps too lenient in the context, because Mr. Obama and his pals have repeatedly argued that America isn't their country.
The infiltration of Muslim Brotherhood in US security circles
It's not Russia that has attacked US in the past - nor is there any hint that Russia would attack US in the future.
However, islam has attacked US many times in the past - and is the most likely attacker in the future.