The Lithuanian deterrence strategy is about making use of military threats to prevent other actors from taking particular actions. There are two major components that determine the success or failure of the Lithuanian deterrence strategy: the military's capabilities to carry out its threat against potential aggressors, and the will to do so. Special attention in this article will be given to the effectiveness of extended deterrence. It provides estimation on the sufficiency of Lithuanian capabilities to provide effective deterrence and recommends a potential direction for their use to strengthen deterrence. This article will discern current Lithuanian deterrence potential and possibilities to improve it using military, economic, as well as political means and other measures.