Concept:
No region exists in isolation. External super powers significantly influence regional stability, economic development, security affairs, and bilateral disputes among South Asian countries.
Step 1: Analyzing the role of outside powers in South Asia.
According to NCERT contemporary world politics, the key outside major powers active in South Asian regional geopolitics are the United States of America (USA) and China.
Step 2: Evaluating the influence of the USA in the region.
Post-Cold War economic reforms, globalization, strategic interest in peace between nuclear-armed neighbours (India and Pakistan), and market involvement make the United States of America the predominant external superpower deeply involved in South Asian affairs and bilateral diplomacy.