I wish it were that easy. I wish people were always honest and forthcoming with the reasons for their actions.
Unfortunately, they aren't and not all liars are the George Santos/Donald Trump type of liars, where they lie so openly and so often that it's impossible to miss. When you're talking about politicians who've ascended to the highest levels of politics, you're talking about people who are often thinking 5 steps ahead, know how to walk the line between honesty and dishonesty by making it appear as though their intentions are pure. It's also very cut-throat and there's lots of "keeping score". "Remember when you didn't help me out here? Well, I'm not helping you now."
Did W invade Iraq because he truly thought there were WMDs and they were training terrorists or did he want revenge for the assassination attempt on his dad? Maybe it was both? Well, we know now that there were very likely no WMDs and lots of countries train terrorists, so is it just a coincidence that the country that tried to kill his dad was targeted? Possibly. Possibly not
How many countries has the US leveraged foreign aid to have one individual removed from office? Of all the countries we provide foreign aid to, Ukraine? Is one politician in Ukraine really worth our time and attention? Maybe, but it's very coincidental, in my opinion.
People are often good at spotting these situations/coincidences when they're happening in the other party, but less so when it's their party, IMO.