I’m not sure what you’re referring to when you say Russia promised not to invade in 2014. 2014 is the year of Euromaidan’s aftermath, of the illegitimacy of Ukraine’s government and, namely, the Russian annexation of Crimea. Russia entered Crimea in 2014, military. Depending on your perspective, it literally invaded Ukraine in 2014.
The war will end with either the destruction of one party or a peace deal. You are implying there should not be a peace deal because Russia is untrustworthy. Then you must be, against all odds and material reality, hoping that Ukraine defeats the entirety of Russia.