The freight train that is the conflict in Ukraine inexorably advances to its final destination. Each one of its passengers feels inextricably trapped onboard as the infernal machine acquires more speed and time runs out for an off-ramp. For years, the exit signs have succeeded one another so as to turn into an ever more indistinguishable blur: The Minsk Agreements, the late 2021 Russian proposal to Washington on security guarantees, the aborted peace...