Where is the evidence to prove who bombed the Saudi oil fields?

Hood River News (Oregon) Letter:
What to believe?

And more information about this subject is at this link (where "real news" is reported- BBC)

https://www.bbc.com/news/world-middle-east-49718975

Who bombed the Saudi oil field? The Saudis claim it’s the Houthis or Iran — those are the same Saudis (MBS)- Mohammad bin Aasif Salmani - who deny torturing and dismembering a member of the U.S. press, Jamal Khashoggi, and Donald Trump agrees with them.
During his administration, our president has lied or obfuscated so many times you never know what to believe; is he lying or is this actually the truth he’s speaking? They show us the so-called remains of a missile on TV — it has no discernible markings and it’s hard to believe that that much remains of a missile that blew up.
MBS, a known liar and probably involved in Khashoggi’s murder and dismemberment, can’t be believed any more than our president, who indicated he was awaiting word from the Saudi’s in regard to taking action against Iran. 

Is MBS now running the Pentagon?
Just to make this mess more interesting, the Saudi’s are preparing to take Aramco (Arabian American Oil Company) public. It’s their oil company. Unfortunately, the price of oil isn’t high enough to justify the amount of money they’d like from going public, so *did the Saudi’s blow their own oil field?* It certainly raised the price of oil, at least temporarily, and when the Saudi’s deny doing this, would you believe them or President Trump no matter what they said?

If so, there’s a lovely bridge in Hood River I’d like to sell you, or maybe you prefer the Bridge of the Gods …
Rob Brostoff in Cascade Locks, Oregon