It is "perfectly reasonable" for Ukraine to strike targets deep inside Russia, in part to "degrade" Russia's military, says Richard Dannatt, a former head of the British Army. In an interview with RFE/RL's Georgian Service, Dannatt also says that given the slow pace of Ukraine's counteroffensive, Kyiv and its Western partners should prepare for a likely protracted conflict.
At this point I think everyone is looking at Israel and seeing how there are no limitations to their use, so the restrictions being enacted on Ukraine look increasingly… motivated.