One of the features of a sovereign state is that it

A sovereign state is a political entity that has full control over its own affairs and is not subject to external control or influence. One of the key features of a sovereign state is its capacity to defend itself from external aggression, which means that it has the ability to protect its territorial integrity and national sovereignty from external threats. This can be achieved through the use of its military and other security agencies. Having a large number of soldiers is not a necessary feature of a sovereign state, as the size of a state's military is not the only factor that determines its ability to defend itself. Additionally, the type of government system (e.g. presidential or parliamentary) and its level of indebtedness to other countries are not defining features of a sovereign state.