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Joshua S Goldstein explains thus: 'Political relations among nations cover a range of activities—diplomacy, war, trade relations, alliances, cultural exchanges, participation in international organizations…' Each of these makes up distinct issue areas on which scholars and foreign policy makers focus their attention. 'Other related issues include global trade negotiations and ethnic conflicts, such as the Arab-Israel conflict or the Tamil-Sinhalese conflict. Thus, while international politics relates to political relations among nations, international relations is wider in scope, including, indeed, political relations.
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V.N. Khanna (International Relations, 5th Edition)