The Washington Post reported on this aspect of those leaks in May 2023, writing that the US was already aware by then that Zelensky thought that this move would "give Kyiv leverage in talks with Moscow."

This wasn't lost on the Russians either since RT promptly published an article about it, which was analyzed here at the time, thus raising questions about why there weren't better border defenses in place just in case. These reports circulated right before Ukraine's ultimately failed counteroffensive, so it's possible that the border was fortified as a precaution ahead of that happening, but then Russia grew complacent with its on-the-ground gains in Donbass over the past year and let its guard down.

About that, this analysis here from last week pointed out that Ukraine's invasion of Kursk Region should incentivize Russia to finally eliminate groupthink. It's difficult to believe that there were no reports whatsoever about a build-up along the border ahead of time, thus meaning that higher-ups might have dismissed whatever they were speculatively told by their underlings as "irrational". Therein lies the problem since Ukraine always ends up surprising Russia but relevant lessons have yet to be learned.

Whether it's long-range drone strikes against its strategic airfields, early warning systems, and even the Kremlin or naval drone attacks against its Black Sea fleet, all of which are aided by the Anglo-American Axis, Russia should have expected by now that every one of its soft spots is a likely target. Nevertheless, it's regularly caught with its pants down, though folks also shouldn't forget that it still intercepts a lot of drones and foils many impending plots too.

With that being said, more could have been done to protect the border from the invasion that Zelensky had been plotting for a year and a half. Prior to the latest events, he employed terrorist proxies for cross-border raids into Belgorod Region, which might have deceived Russia into thinking that Ukraine abandoned its plans for a conventional invasion. That could explain why the only forces that it deployed along the border were counter-sabotage units who were unprepared to fend off a real invasion.