The post suggests two: sanctions should have been precommitted to have any deterrence effect (this seems obviously true), and sanctions should have a clear stop condition to encourage de-escalation.
I support lifting SWIFT sanctions immediately if Russia reverts to status quo ante bellum (that is, Crimea is still annexed and Donbas is under Minsk agreements), but if that is not politically feasible, any stop condition would be better than the current situation. For example, a stop condition could be territorial integrity of Ukraine as of Budapest memorandum, that is, returning Crimea and Donbas to Ukraine control.
The post suggests two: sanctions should have been precommitted to have any deterrence effect (this seems obviously true), and sanctions should have a clear stop condition to encourage de-escalation.
I support lifting SWIFT sanctions immediately if Russia reverts to status quo ante bellum (that is, Crimea is still annexed and Donbas is under Minsk agreements), but if that is not politically feasible, any stop condition would be better than the current situation. For example, a stop condition could be territorial integrity of Ukraine as of Budapest memorandum, that is, returning Crimea and Donbas to Ukraine control.