moving troops to show decision/support is already not (well - just) diplomacy, though
otherwise yes - on all your points above, but the current rasha leader counted exactly on lack of all of those steps - similarly as before/after annexation of crimea
(and even after some limited physical display of western armed forces support would have happened that wouldn't have stopped him IMHO - this is based on extremely bad intel about overall mood towards invaders/occupiers of common ukrainians and his own mad delusion)
otherwise yes - on all your points above, but the current rasha leader counted exactly on lack of all of those steps - similarly as before/after annexation of crimea
(and even after some limited physical display of western armed forces support would have happened that wouldn't have stopped him IMHO - this is based on extremely bad intel about overall mood towards invaders/occupiers of common ukrainians and his own mad delusion)