Obviously there have been other high-profile attacks presumed to be conducted by Russia, though apparently evidence isn't hard enough to do anything. Plus, actually doing anything isn't a popular position at the moment. Frankly I don't think any of our NATO countries are ready to act in a clear and decisive manner although you can assume the US is constantly working on battle plans day to day.
This instance will require more investigation as well. Doubtful that anything will be able to be linked directly to the Russian government.
Secretary of Defence Blinken is urging Biden to lift restrictions on using American weapons to attack targets on Russian soil, and a US congressman used ISW map data to illustrate the point to Congress.
Note that this congressman is using "public" data compiled by a private entity and it was presented on a public TV broadcast. Who knows what other info our intelligence community is gathering but honestly these days almost any observable surface-level "intel" becomes public before any classified agency has time to even study it, what with privately owned satellites and cameras etc.
We all already know it but data shows how big the problem is of China/Chinese companies funding Russia's war effort. The shift away from expensive domestic technology and weapons to inexpensive consumer-level technology allows Chinese industry to keep pumping out useful products at an immense pace.
This war won't end until Turkey finished that god damned canal and America sends a fleet into the Black Sea.
At that point, apologies to any members who live in Russia and will or are suffering from this, but if Turkey and the UN agree that the Instanbul Canal is not governed by the Montreux Convention, and if the US Navy takes advantage of that, Russian defense and military industries would come under the barrage of thousands of long-range weapons within days and come to a screeching halt. If the US is bold enough to send a carrier, they'd conduct SEAD missions with brutal effectiveness, eliminating Russian air defense and warning capability.
But the canal doesn't exist yet, and NATO is going to do everything possible to not get directly involved.