Complex sentence: Strategic studies is an interdisciplinary academic field devoted to topics concerning the relationship between politics, geography and natural resources, economics, and military power, such as the role of diplomacy and threats in the preparation and use of force.
Split into simpler sentences: Strategic studies is an interdisciplinary academic field devoted to topics concerning the relationship between politics, geography and natural resources, economics, and military power. The curriculum would also include the role of diplomacy and threats in the preparation and use of force.