The only party that has appeased Russia is the Conservatives, they did nothing when he invaded Crimea, nor did they do anything when the report came out in 2012 that Russia had poisoned Litvinenko with a nuclear poison in the UK.. then did nothing again when Russia used nerve agent in Salisbury, killing a british citizen.
I'm afraid that's not true at all. When Putin invaded Crimea in 2014, the British Government (initially the coalition, then Conservative majority from 2015) started supplying arms to Ukraine, and sending British personnel there to provide training to the Ukrainian forces. Operation Orbital.
We couldn't stop Russia taking Crimea in 2014. We could, and we have stopped Russia taking Kyiv in 2022.
On the subject of Salisbury, I recall the then Foreign Secretary (BJ) explicitly blaming the Russians for the attack. The then Leader of the Opposition (JC) however was determined to take the "sightseeing, tall spire, nothing to see here" claims at face value, asking if we should perhaps double-check with the Russians whether it really was novichok.
On Litvinenko, I'm wondering what more you were expecting the government to have done. An extradition request had long-since been sent and the Russians were ignoring it. Short of sending in the SAS, what more could the government do.
Incidentally the Russian attempt to interfere in the 2019 GE by leaking an NHS dossier could only have been done with the intention of engineering a Labour victory. Let's face it, Putin would have loved a Corbyn government - someone who would have pulled the UK out of NATO, disarmed and demilitarised the country.