To what extent has state sovereignty been seen as an eroded concept in the 21st century?

State sovereignty refers to what characterises a state's independence, control over their own territory and the ability to govern themselves. The Treaty of Westphalia of 1648 is regarded as the beginning of statehood. This treaty was established for purposes of peace and to prevent interference with another state's domestic affairs. It argues three main principles: sovereignty, non-intervention, and the equality of states.Over time, this concept of Westphalian state sovereignty has been eroded due to several factors, e.g. globalization, supranationality and humanitarian intervention. State sovereignty has been challenged by a number of forces operating beyond the state; from the threat of global terrorism to the challenges of climate change, the powers of international organisations to influence of global financial markets. the sovereign state is greatly influenced by non-state actors nowadays. Moreover, there seems to be an expanding interaction with NGOs. the relationship of nation-states to IGos is sometimes sovereignty-enhancing, sometimes sovereignty-limiting. Supranationality has tended to erode certain norms and images of national sovereignty, without however, fundamentally altering the position of the nation-state as still the most important actors in the international system. Lastly, humanitarian intervention challenges the notion of non-interference and state equality, creating a tension between the norms of state sovereignty and the protection of human rights. The focus has been shifted to the security of individuals. it requires serious justification as it occurs without permission and the use of force. Therefore, one could argue that these factors do influence the erosion of state sovereignty, but the state still is a very important player in the international arena.