These countries often possess certain capabilities, such as strong economies, advanced technologies, and diplomatic influence, that allow them to have a voice in global affairs.
[1] Middle powers play a crucial role in the international system by promoting multilateralism, cooperation, and peaceful resolution of conflicts.
The traditional and most common way is to aggregate critical physical and material criteria to rank states according to their relative capabilities.
[4]According to Eduard Jordaan of Singapore Management University: All middle powers display foreign policy behaviour that stabilises and legitimises the global order, typically through multilateral and cooperative initiatives.
Emerging middle powers by contrast are semi-peripheral, materially inegalitarian and recently democratised states that demonstrate much regional influence and self-association.
[1]Another definition, by the Middle Powers Initiative (MPI), a program of the Global Security Institute, is that "middle power countries are politically and economically significant, internationally respected countries that have renounced the nuclear arms race, a standing that give them significant international credibility.
"[11] Canadian leaders believed Canada was a middle power because it was a junior partner in larger alliances (e.g. NATO, NORAD), was actively involved in resolving disputes outside its own region (e.g. Suez Crisis), was not a former colonial power and therefore neutral in anti-colonial struggles, worked actively in the United Nations to represent the interests of smaller nations and to prevent the dominance of the superpowers (often being elected to the United Nations Security Council for such reasons), and because it was involved in humanitarian and peacekeeping efforts around the world.
In March 2008, Australian Prime Minister Kevin Rudd defined his country's foreign policy as one of "middle power diplomacy" along the lines of similar criteria.
"[13] Nevertheless, Kupchan argues that middle powers—particularly in the Global South—have more power, agency, and "geopolitical heft" in the 21st century (namely the 2020s) than at any time since the Second World War.
[13] Among the shared characteristics of these six nations are membership in the G20; large and fast-growing economies; and active diplomatic involvement in major events, such as the Russian invasion of Ukraine and international climate action.
[13] Kupchan attributes the emergence of stronger middle powers to several historical developments in the international system, including the weaker bipolarity between the U.S. and China (as opposed to the stricter allegiances of the Cold War and the subsequent U.S. hegemony following the collapse of the Soviet Union) and the gradual trend of deglobalization, which has fostered regionalized geopolitical and geoeconomic relationships wherein middle powers have comparatively greater influence; for example, the fragmenting of the international energy market has purportedly given Saudi Arabia, a major energy exporter, far more weight in now-smaller regional markets.
[16][17] Some in the field of international relations, such as John Kirton and Roberto Gimeno claim that Italy is a great power due to its status and membership in the G7 and NATO Quint.
Lists are often the subject of much debate and tend to place comparatively large countries (e.g. Argentina) alongside relatively small ones (e.g.
[57] Some larger middle powers also play important roles in the United Nations and other international organisations such as the WTO.