How did second-generation peacekeeping differ from earlier UN peacekeeping missions?

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Taking prisoners — diplomacy A larger-than-life Ramses II towering over his prisoners and clutching them by the hair. Limestone bas-relief from Memphis, Egypt, 1290–24 bce; in the Egyptian Museum, Cairo.

First-generation, or "classic," peacekeeping missions—conducted primarily during the Cold War—relied on lightly armed troops from neutral countries who were authorized to use force only in self-defense. These missions operated with the consent of the parties involved to observe cease-fires and act as buffers.1

In contrast, "second-generation" peacekeeping emerged post-Cold War to address complex internal conflicts where state order had collapsed. Key differences include:1

Scope and Personnel: These missions pursue multiple political and social objectives, incorporating civilian experts and relief specialists alongside military personnel.1
Use of Force: Unlike their predecessors, soldiers in some second-generation missions are authorized to employ force for reasons beyond self-defense, such as protecting designated "safe areas".1
Neutrality: Because these missions often react to threats within states, they have occasionally taken sides in domestic disputes, which can jeopardize the United Nations’ traditional stance of neutrality.1
Composition: These operations include troops from a broader range of nations, including permanent members of the Security Council.1

These expanded functions often integrate peacemaking and peace-building activities, such as supervising elections and distributing humanitarian aid.1