War is characterized as direct, massive, and institutionalized, and is limited in time and space.
Human societies began settling in the Neolithic, around 10,000 BC, and warfare became systematic as societies sought to protect or gain territory.
Conflict is rivalry; war is its violent military form.
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📌 A classical interstate war is regular, conventional, and symmetrical: it occurs over a defined period, follows rules, and opposes states of comparable strength.
📌 Guerrilla warfare uses clandestinity, brief skirmishes, and harassment such as sabotage against an army, whereas terrorism uses violence outside the laws of war to create fear and targets civilians through acts such as attacks, assassinations, and hostage-taking.
Further detail
Regular armies face regular armies; guerrillas target armies, terrorists target civilians.
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📌 A classical peace treaty is imposed on the defeated by the victors, a negotiated peace is arranged with the help of an external organization, and a white peace ends fighting without a victor, a defeated party, or compensation.
Further detail
📌 Bertrand Badie describes positive peace as generalized social appeasement requiring a humanized approach that meets needs such as food, housing, and water, takes actor diversity into account, and is systemic.
Negative peace stops war; positive peace builds cooperation.
The conflict counts cited are 65 armed conflicts in the Oslo peace-research institute’s 2020 figure and 130 conflicts in the UN’s 2025 figure.
The Middle East and Asia are described as the “Arc of Crises,” whose conflicts have expanded, become more complex, and become interconnected.
Africa contains the largest number of armed conflicts, with interstate and intrastate wars each accounting for 50% in the cited overview; Asia also has many kinds of conflict, while Europe and the Americas have fewer.
Interstate wars have declined since 1980 but have not disappeared; the course identifies Russia’s 2022 attack as their reappearance in Europe.
Intrastate wars have increased since 1990 and are described as especially deadly.
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Carl von Clausewitz’s De la guerre, published posthumously in 1832, presents war as the continuation of politics by other means and as a means serving political ends.
Clausewitz distinguishes the political, strategic, and social dimensions of war; tactics aim to win a battle, while strategy aims to win the war as a whole.
For Clausewitz, political purposes determine the outbreak, conduct, and political outcome of war, and a war begins only for a political motive.
📌 Clausewitz’s absolute war is a theoretical escalation toward the military annihilation of the adversary, whereas real war is limited by politics, strategy, and friction, also called the “fog of war.”
Further detail
Thomas Hobbes’s Leviathan (1651) presents states as gladiators in an arena of continual suspicion and attributes wars to competition and rivalries between states.
Clausewitz’s account of real war says that war is often proportionate to available means and should end in negotiated peace rather than the absolute victory of one side.
Political aims direct war; escalating resistance can drive violence toward extremes.
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Further detail
The Seven Years’ War lasted from 1756 to 1763.
The French levée en masse in 1793 sent all men of fighting age to defend the borders; the cited force rose from 150,000 men in 1792 to more than 700,000 in 1793.
The course contrasts approximately 50,000 people in the Seven Years’ War with 200,000 in 1813 as evidence of growing military forces.
From 1792 to 1815, France fought six European coalitions, and Europe experienced only a little more than a year of general peace during that period.
The French revolutionary government declared war on Austria in 1792 amid revolutionary radicalization and aims to spread revolutionary principles, while other European powers sought to preserve the balance of power and prevent revolutionary contagion.
The Peace of Amiens was signed in 1802 between France, England, Spain, and the Batavian Republic, and war with England resumed in 1803.
Britain retained command of the seas, defeated the French fleet at Trafalgar in 1805, and resisted Napoleon’s Continental System, established in 1806 to weaken the British economy.
Napoleon’s invasion of Russia in 1812 ended in disaster and retreat; Prussia and Austria drove French forces out of Germany in 1813, and Spain also rose against France.
Napoleon abdicated in April 1814, returned for the Hundred Days, and was defeated at Waterloo in June 1815 before being exiled to Saint Helena.
The Congress of Vienna in 1814–1815 restored monarchies across Europe and sought to eliminate Napoleon’s political legacy.
Mass mobilization → expanding war → coalition defeat.
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Further detail
Martin van Creveld is presented as an Israeli historian who argues that the emergence of terrorist actors changes the character of warfare toward irregular war.
The course characterizes irregular wars as conflicts without fronts or borders, fought for an ideology such as Islamism.
Take a 20-question practice quiz on HGGSP, with every answer explained.
1. A rivalry over a territory is political in one case and cultural in another. What term describes this situation?
2. Two groups dispute control of a region, but neither uses military force. Does this situation meet the definition of war?
Memorize the key concepts of HGGSP with 50 flashcards.
What is a conflict?
A situation of rivalry concerning a territory.
What forms can a conflict take?
Political, cultural, or other forms.
What is war?
A violent confrontation in which at least two actors seek to settle a dispute through military force.
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