Saudi Arabia might play hardball with OPEC — here's why (uso)

Recent developments in the OPEC universe have fueled speculation that oil producers might actually be able to agree on something at the informal talks in Algiers, Algeria, set for September 26-28.
Most notably, Saudi Arabia and Russia agreed at the G-20 summit in China last week to cooperate on oil and create a "working group" to stabilize markets — a move some analysts considered to be "another indicator of the extreme economic duress that producers are enduring."
And on the following day