World War I had greatly changed the way of diplomacy and politics in Asia, Europe, and Africa with the defeat of the Central Powers. Empires that sided with the Central Powers were destroyed. The Russian Empire, which did not side with the Central Powers, died as well. The war also changed the borders in Eastern Europe, with many new countries born. The war led to strong irredentism and revanchism. These senses were especially strong in Germany, which had no choice but to sign the Treaty of Versailles. The Germans also had 13% of their homeland area and all colonies taken away, and they had to pay back a very large sum of money to the Allies. The size of their army and navy was also limited, while its air force was banned.