
In Hearts of Iron IV, diplomacy is a powerful tool that can influence affairs far from home without the need for battle plans or division deployment. To access the diplomacy screen, right-click on a country, select the State owner flag, and then click Details. Alternatively, you can select a province of the country you want to view, click on their flag in the bottom left corner, and then click on Details to access the diplomacy screen. It's worth noting that the Diplomacy tab was removed, but you can still access the old diplomacy tab by right-clicking on a country and selecting Open Country List at the bottom of the tab.
| Characteristics | Values |
|---|---|
| How to access the diplomacy screen | Right-click on a country, then click on the "State owner" flag, then click "Details" |
| How to access the old diplomacy tab | Right-click on a country, then click on "Open Country list" at the bottom of the tab |
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What You'll Learn
- Right-click on a country to access the diplomacy tab
- Click on the country, then the State owner flag, then Details
- Use the diplomacy screen to check country intelligence information
- Diplomacy can be used to justify a war or push for a neutral country to join your side
- Diplomacy is mostly bilateral, taking place between two countries

Right-click on a country to access the diplomacy tab
To access the diplomacy screen in Hearts of Iron IV (HOI4), you can right-click on a country to bring up a menu with various options. At the bottom of this menu, there should be a button labelled "Open Country List", which, when clicked, will open up the diplomacy tab. This tab provides access to the country's diplomatic relations and allows players to interact and negotiate with other countries.
The diplomacy tab in HOI4 offers players a range of diplomatic options to pursue their strategic goals. Players can use this screen to forge alliances, declare wars, or negotiate peace treaties. By understanding the dynamics of diplomacy, players can influence world events and shape the outcome of the game without ever needing to engage in direct military conflict. This can involve justifying wars, seeking support from neutral countries, or forming factions with other nations.
Factions play a crucial role in HOI4's diplomacy system. A faction is a coalition of nations that agree to protect each other and fight together. Members of a faction grant each other military access through their lands and share intelligence information. While factions are not permanent, as members can leave, it is uncommon for them to do so. At the start of the game, players will encounter three factions: the Allies, the Axis, and the Comintern.
By right-clicking on a country and accessing the diplomacy tab, players can navigate the complex web of international relations in HOI4. They can assess the country's standing with other nations, determine its allies and enemies, and make strategic decisions accordingly. This screen serves as a central hub for players to manage their diplomatic relations and pursue their strategic objectives through negotiation and alliance-building.
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Click on the country, then the State owner flag, then Details
To access the Diplomacy screen in Hearts of Iron IV (HOI4), you can follow these steps:
- Click on the country you want to engage with diplomatically.
- Locate and click on the "State owner" flag. This flag is typically found at the bottom left of the screen, as indicated by a user on the Paradox Interactive Forums.
- Once the flag is clicked, a diplomacy screen will appear.
- On this screen, click on the "Details" option to expand the information available.
It is worth noting that some sources suggest right-clicking on a country and selecting "Open Country List" from the bottom of the tab to access the old diplomacy tab. This method may be necessary if you are following an older tutorial that includes a "Diplomacy" tab after the "Investigation" tab, which has since been removed from the game.
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Use the diplomacy screen to check country intelligence information
To access the diplomacy screen in Hearts of Iron IV, you must first select a province of the country you want to examine. Then, click on their flag, which is most likely the "state owner" flag, found at the bottom left of the screen. This will bring up the diplomacy screen, where you can view the country's intelligence information.
Once you are on the diplomacy screen, click on the icon to the right of the leader's portrait. This will only work if you have researched decryption beforehand. From there, select the details tab to view the country's intelligence information. This includes the number of divisions and factories they have.
It is important to note that your ability to access certain information may depend on your decryption power. Your decryption power will be split evenly if you are trying to break the codes of multiple countries simultaneously. Additionally, countries not at war suffer a 50% penalty to their decryption power.
Intelligence agencies in Hearts of Iron IV also play a crucial role in gathering information. Each agency has five branches: Intelligence, Defense, Operations, Operative Training, and Cryptology Department. Upgrading these branches will improve your ability to gather intelligence on other countries and conduct operations. For example, the Intelligence branch provides upgrades for each field of intelligence, while the Defense branch interacts with operatives' missions and improves counter-intelligence capabilities.
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Diplomacy can be used to justify a war or push for a neutral country to join your side
In Hearts of Iron IV, diplomacy is a powerful tool that can influence affairs far from home without the need for battle plans or division deployment. Your ability to perform diplomatic maneuvers will play a significant role in the outcome of your campaigns. Whether you are justifying a war or encouraging a neutral country to join your faction, diplomacy will come into play.
To access the diplomacy screen, right-click on a nation, and at the bottom, there should be a button that opens it. From there, you can declare war or attempt to bring neutral countries to your side.
When justifying a war, you can use diplomacy to strengthen your position and gain advantages without direct military conflict. This can involve forming alliances, gathering intelligence, and seeking support from other nations. Additionally, diplomacy can be employed to establish factions, which are coalitions of nations agreeing to protect each other and fight together. Factions provide mutual benefits such as military access and shared intelligence.
When attempting to bring a neutral country to your side, it's important to consider their ideological alignment and existing alliances. For example, democratic nations may be more inclined to join the Allies, while fascist or neutral countries might form their own factions. Understanding the dynamics between nations and using diplomacy effectively can help you gain valuable allies and strengthen your position in the game.
Remember, diplomacy in Hearts of Iron IV is a versatile tool that can be leveraged to achieve your strategic goals. By mastering its nuances, you can navigate complex international relations and shape the outcome of your campaigns.
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Diplomacy is mostly bilateral, taking place between two countries
In Hearts of Iron IV, diplomacy is a powerful tool that can significantly influence your campaigns and affairs, even in distant lands. While some diplomatic actions are performed faction-wide, most diplomacy in the game is bilateral, occurring between two countries.
Factions in Hearts of Iron IV refer to coalitions of nations that agree to protect each other and fight together. They share military access and intelligence, and members can leave if they desire, although this is rare and avoided by the AI. At the 1939 start in Europe, there are three factions: the Allies, the Axis, and the Comintern. Other factions, such as the Chinese United Front or Novus Imperium Romanum, can emerge through national focus trees, or players can form their own faction once they unlock the ability.
To access the diplomacy panel, you can right-click on a nation, and at the bottom, there should be a button that opens the diplomacy screen. Here, you can view your nation's attitude towards other nations and vice versa. This screen also displays intelligence information, such as the number of divisions and factories of other countries.
Understanding bilateral diplomacy is crucial when declaring war. You can ask your allies for participation and assess the strength of the faction your target country belongs to. Granting independence to another nation can increase their opinion of you and facilitate alliances. However, be mindful of the cost, as retracting a guarantee of independence incurs a political power cost.
Diplomacy in Hearts of Iron IV allows you to influence neutral countries to join your side, form alliances, and navigate complex international relations without needing to resort to warfare.
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Frequently asked questions
Right-click on a country, then click on the "State owner" flag, and then "Details". Alternatively, select a province of the country, click on their flag, and then click on "Details" to access the diplomacy screen.
The "Diplomacy" tab was removed. To access the old diplomacy tab, right-click on a country and click on "Open Country List" at the bottom of the tab that opens up.
The intelligence tab is a DLC.
Right-click on a nation and at the bottom, there is a button that will open the diplomacy screen.
HOI4 is short for Hearts of Iron IV, a grand strategy game by Paradox Development Studio.
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