: Research now includes economic stability, energy security, and environmental threats like climate change.
: Post-colonial and gender-based studies challenge the "Eurocentric" history of the field and highlight the security needs of the Global South. ORIGINS, DEVELOPMENT AND CONTENDING APPROACHES International and Security Studies Internationa...
: Research primarily centered on the state as the main actor and the preservation of national sovereignty. : Research now includes economic stability, energy security,
: Core topics included nuclear deterrence, bipolarity, and conventional military threats. : Research now includes economic stability
Since the 1990s, scholars have expanded the definition of security beyond military force, a process often called "widening" (new sectors) and "deepening" (new levels).
Historically, the field was dominated by during the Cold War.