World Tension represents the overall level of fear and anxiety that exists among the nations of the World. The number displayed can be between 0% and 100%. Total World Tension can be higher than 100%, but there are no additional effects beyond the 100% limit—the overflow instead acts as a "buffer" against events that decrease Tension.
The level of World Tension has several impacts on gameplay, in particular allowing or limiting political decisions, national focuses, and more. It is shown as an icon depicting Earth, with flames engulfing it more fully the higher current World Tension is. Generally, the higher the World Tension, the more popular support nations have for taking belligerent actions.
Impacts on world tension
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Increase in world tension
The following increases the level of World Tension:
- Declaring war
- Puppeting, Satelliting, Annexing, or taking land, especially without claims
- Sending volunteers
- Joining a faction
- Justifying a Wargoal
- Revoking guarantee
- Certain focuses and events
- Annexing territory in a peace treaty
Decrease in world tension
The following can cause a decrease in World Tension:
- Decay over time
- Peace treaty
- A democracy guaranteeing a nation's independence
- A democracy joining a Democratic faction
Decay over time
World Tension is the sum of every positive and negative event that has occurred to date reduced by their decay. Each completed individual event will gradually decay toward 0 at .1 per month. Note that this also affects events which reduce World Tension, e.g. peace treaties reduce World Tension, but their effects decay just like aggressive events. World Tension events from countries at war do not decay.
For example, if your current World Tension list has:
- 2% Germany Demanded Sudetenland
- 16.7% Treaty of Valencia ending Spanish Civil War
- -1.4% Italian Peace Treaty w/ Ethiopia
- 0.6% Militarization of Rhineland
- Total: 17.9%
The next month, World Tension will change to:
- 1.9% Germany Demanded Sudetenland
- 16.6% Treaty of Valencia ending Spanish Civil War
- -1.3% Italian Peace Treaty w/ Ethiopia
- 0.5% Militarization of Rhineland
- Total: 17.7%
Effects
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World Tension reduces the time (and cost) of justifying of wargoals by up to 50% at 100% World Tension.
Ideological effects
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Different ideologies have different effects on World Tension—both in terms of generation and in terms of how much World Tension is needed to take certain actions.
Tension required
Some national focuses can lower the threshold. Below you find the base threshold without any modifiers.
Action | Ideology | |||
---|---|---|---|---|
Communist | Democratic | Fascist | Non-aligned | |
Guarantee independence | - | 25% | - | 40% |
Send volunteers | - | 50% | - | 40% |
Join faction | - | 80% | - | 40% |
Justify war goal | - | - | - | 50% |
Declare War | - | 100% | - | 25% |
Lend-Lease | - | 50% | - | 40% |
Communism
World Tension threshold:
- Comintern impact on tension threshold: -50%
Communist countries are not limited by World Tension.
Democracy
Democracies cannot justify wargoals against other democracies.
Democracies have the most restrictive tension thresholds:
- Allies impact on tension thresholds: −10%
- Guarantee independence: 25%
- Send volunteers: 50%
- Join faction: 80%
- Declare war: 100%
- Send Lend-Lease: 50%
Fascism
World Tension thresholds:
- None.
Fascist countries are not limited by World Tension.
Non-aligned
World Tension threshold:
- Neutral faction impact on tension threshold: +10%
- Guarantee independence: 40%
- Send volunteers: 40%
- Join faction: 40%
- Justify war goal: 50%
- Declare war: 25%
- Send Lend-Lease: 40%
National focuses that impact world tension by country
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Germany
- Rhineland +5
- Anti-Comintern Pact +2
- Anschluss +10
- Reassert Eastern Claims +3
- Demand Sudetenland +3
- Fate of Czechoslovakia +5
- Danzig or War +5
- War with France +5
- Demand Slovenia +2
- Second Ljubljana Award +2
Japan
- Secure China +15
Italy
- Claims on Yugoslavia +4
Soviet Union
- Claim Sinkiang +2
- Claim the Straits +2
- The Comintern +1
- Claims in Baltic +1
- Baltic Security +1
- Claims on Poland +3
- Claim on Bessarabia +1
United Kingdom
- Benelux Intervention +1
- Scandinavian Intervention +1
USA
- Black Chamber Operation +1
- Preemptive Intervention +1
World tension needed for national focus
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Some National Focuses can't be chosen unless world tension is above a certain limit. Most of them are also possible if the country is at war.
United Kingdom
5% | 10% | 20% | 50% |
---|---|---|---|
General Rearmament | Issue Gasmasks | Military Training |
United States
With the 1.6 "ironclad" patch, the USA do not have hard world tension thresholds for national focuses. However, the Two Ocean Navy Act and Selective Training Act require higher support in Congress if world tension is lower than 50%.
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