(Rishi's gone to visit Volodymyr... maybe he's needing to distract from bad news dogging him at home, just like Boris? Ok, so Liz never went there (I think), but then she didn't do much of that sort of thing at all - even with fellow UK leaderships.)
Liz Truss was very pro-Ukraine, probably even moreso than Boris. Whether or not Rishi's done it for image, it was fairly necessary for him to go just to reassure the Ukrainians that the UK's comedy leadership roulette wouldn't jeopardise UK support to Ukraine, which has been vital since 2012 to ongoing military development
Oh, I think it's something I definitely support (providing support, in person or otherwise), but the mirroring was too obvious not to mention. And while Truss even effectively went "yeah, ex-British Army guys, you should
definitely go and sign up in Ukraine... have you got a packed lunch?", it was just that her shortest (non-deputising, leaving alive) premiership seemed to have very little time even for calling Scotland or Wales on the phone, and definitely didn't get to follow her lads over there...
Also just the fact that Vladimir's rival is a man called Volodymyr is priceless
In the early days (perhaps even in slightly before, when everyone was still wondering whether the massing Russians/Belorussians might even take that final step forward) there was a memorable inteview with a Kiev ("Keev!") resident where the obviously mainly-Russia-based newsman introduced a random talking-head they'd found on the street as Valadimir and was politely corrected.
I'm no linguist (a monoglot am I!) but I've occasionally started to think I get an inkling of the basic vowel-shift between Russian and Ukrainian (and other related differences, like Dnipr/Dnipro) such that I might vainly imagine that I could recognise which sort of person I'm listening to, as with Kiwis vs. Aussies but with slightly less unintelligable language.