Cyber-Attack Against Ukrainian Critical Infrastructure

"These [contingency] plans should include the assumption that the ICS (Industrial Control System) is actively working counter to the safe operation of the process."

Shades of "Maximum Overdrive". (Without the supernatural element, of course. Which makes it more scary if you're paying attention, eh?)

"The [Black Energy] malware was reportedly delivered via spear phishing emails with malicious Microsoft Office attachments."

Again it seems this is the easiest way to get inside of any sufficiently large organization.

It seems ridiculous that any machine on which a successful spear-phishing attack could take place would have any route to the control system.

which state or individuals within those states benefit from attacking Ukraine's infrastructure?

How likely is it that these are the same people that have wreaked havoc in previous years?

Who supports rebellion in Donetsk and beyond?

It's like the emperor wears no clothes for lot of Putin's folloewrs.