Trump's problem is that because of Democracy he needs Graham and the other Neocons to not impeach him. And they want war with Russia.
He could have ended the war on day one by cutting off US aid and intelligence information to Ukraine, but then the Republicans in Congress would have blocked everything he wanted to do and impeached him.
Your problem is that you appear to believe that politics is about telling the truth, when it's one of the most corrupt endeavours in human history. Only Boomers think "OMG The President LIED!" is somehow noteworthy after decades of politicians lying to us all the time.
The smart people look at what Trump does rather than what he says.