Wow! While I was driving to New Mexico to visit archaeological sites, Ukraine was hammering oil refineries in Russia with drones! How come none of you told me? 😜
Urkaine sent drones over 1000 kilometers to destroy oil storage tanks and shipping infrastructure at the ports of Ust-Luga and Primorsk on the Gulf of Finland. These ports were rendered unable to ship any cargo. Reuters estimated that Russia lost about 40% percent of its oil export capacity while Bloomberg put the figure at 43%.
As you know, Putin had been enjoying the oil price spike due to the Iran war. Not so much now. He'll try to rebuild the ports and/or reroute the oil. But until he gets an effective defense against these drones, the Ukrainians can just repeat what they've done.
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