Waltz suggests that states behave in such a way that results in forming a balance. This tendency, in fact, owes much to the security dilemma. For Waltz, security is the most essential goal for states; however, increasing the national power, paradoxically, may not achieve this goal. It is basically a zero-sum game, the gain of one country is the loss of another. The division of gains may favor certain countries even in winning coalitions and, therefore, pose security challenges for other countries. Therefore, the correct option is D.