Yes the Russians have been trampling all over the Chernobyl exclusion zone, even hand-digging trenches in the worst bits, unprotected & uninformed & unaware. Quite a lot of these troops will likely die of alpha-induced cancers in their lungs in the years to come. Not good.
Ukraine has apparently struck Belgorod (which is in Russia, just across the border from Kharkiv) for the third time if I recall correctly.
My memory is the first time was a short range ballistic missile attack at the beginning of the invasion. Second time it was unclear what the weaponry was, fairly recently. This time it seems to be two helicopters going after the oil terminal complex. Attacks like this will really cause problems in the logistics tail of the Russian forces, both in their attempts to attack Kharkiv area coming from the North, and also in their attempts to do a West > East transfer of their withdrawn/retreating forces from the Kiev assault to the Donbass area. I think I previously estimated at least a couple of weeks for such a lateral transfer to be accomplished in any volume. I think this is the fifth significant cross-border attack by Ukraine as there was (memory) one also in the Donbass rear area inside Russia and I seem to recall an incident at a airfield site in Belarus.
The Antonov bridge is not your grandfathers bridge. If the Russians were to blow it would cause a very significant problem for Ukraine force trying to access Kherson and thereby also relieve Mariopol and break the Crimea-Donbass land corridor. There are very few bridges across the Dnieper in this region. There is one crossing about 20km East (at Katzkova / Kharkova Hydro dam, also in Russian hands on at least the south side) , none to the West, and then next up is 200km further East at Zaphorizia. The Russians appear to be trying to push ahead with a pretend independence referendum in Kerson Oblast just as they did in Luhansk and Donbass oblasts, (and Crimea) as justification for long term occupation.
Antonovskiy Bridge - Wikipedia
I am sure the Ukraine will try to retake Donbass areas if the opportunity can be caused to arise, ie it will be an objective. Less sure about attempting Crimea.
Some reports that UK will give long range artillery systems. Conflicting reports as to what - 105mm lights, AS-90, or what. Not just UK, also many others, see donor conference report.
Ben Wallace says donor conference of over 35 countries discussed need to change type of weaponry supplied
www.theguardian.com
If you look at video of the operating heights (and speeds, which can be deduced from the video) of Ukraine air defence fighters (not ground atack) you can get an insight into the limitations they are operating under, and the tactics they are having to adopt to try to stop Russians gaining air control. These are by no means normal ways of doing business, or even good ways, ie it shows how difficult the situation is for Ukraine in the air.