We've just brought you news of a Ukrainian attack on Russian oil infrastructure overnight (see our 10.06 post for more).
Kyiv has conducted a campaign of such attacks, and the topic came up yesterday in our weekly Ukraine Q&A with Professor Michael Clarke.
Here's his answer to a question he was asked about whether Ukraine's strategy of hitting Russia's oil was working.
'Pressure Putin to think again'
The attacks, Clarke said, were having a "big effect" and hurting Russia, but they wouldn't win the war alone.
Despite some "great success" Kyiv is having, Clarke said: "The armed forces will still get the fuel they need, you know, to the detriment of other people."
He explained:
"That [Ukraine's campaign] is putting a strain on the economy, which the Russians will feel, along with other strains on the economy... so it's not without purpose that what the Ukrainians are doing, but will it win them the war? No, it won't. It will add to the pressure they're trying to bring on Putin to think again about a ceasefire."
Clarke said that to really make a difference, this energy and industry strike campaign needed to be combined with territorial gains on the ground.
He said he believed that Putin could be forced to the negotiating table if the two were combined.
Watch the full Q&A here...