The ultimatum was issued to Serbia (jul 23, 1914 – jul 24, 1914)

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Austria-Hungary completely ignored Russia's warning and issued the ultimatum that was decided a few days ago, which means Austria-Hungary is taking the risk of a war with not only Serbia but also Russia. The ultimatum was about:

- The banning of Serbian publications which had been responsible for anti-Austrian propaganda.
- The removal of anti-Austrian individuals from the Serbian military, government and civil service.
- The removal of Serbian teachers and curriculum that had promoted or incited anti-Austrian feeling.
- The outlawing and disbanding of the Serbian nationalist group Narodna Odbrana (‘People’s Defense’).
- A crackdown on cross-border arms trading and the removal of corrupt border officials.
- A joint Serbian-Austrian investigation into the assassination plot, conducted within Serbia by Austrian officials, and involving the investigation and interrogation of Serbian civilians and military personnel.

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