Charles I of Austria vs Vasily IV

Charles I became Emperor of Austria and King of Hungary upon the death of his great-uncle Franz Joseph I. He inherited a war-weary empire in the midst of World War I, facing military defeat and internal disintegration.

Charles I conducted secret peace negotiations with France through his brother-in-law, Prince Sixtus of Bourbon-Parma. He proposed supporting French claims to Alsace-Lorraine in exchange for a separate peace. The negotiations failed when Germany refused to cede territory, and the affair was leaked, damaging Charles's credibility.

Following the collapse of Austria-Hungary at the end of World War I, Charles I issued a proclamation renouncing participation in state affairs but did not formally abdicate. He went into exile in Switzerland, ending over 600 years of Habsburg rule.

Charles I made two attempts to regain the Hungarian throne, traveling to Hungary in March and October 1921. Both attempts failed due to lack of support from the Hungarian regent Mikl

Ivan Bolotnikov led a massive peasant and Cossack uprising against Vasily IV, claiming to be a commander of the resurrected False Dmitry. The rebels besieged Moscow but were defeated by Vasily's army in 1607.

Vasily Shuisky was proclaimed Tsar by a boyar assembly after the overthrow of False Dmitry I. His coronation was irregular, lacking the traditional Zemsky Sobor approval, which weakened his legitimacy.

False Dmitry II, another impostor, established a rival court at Tushino near Moscow. Vasily IV's forces were unable to dislodge him, leading to a dual power situation in Russia for over a year.

Vasily IV signed a treaty with Sweden, ceding the fortress of Korela in exchange for Swedish military aid against False Dmitry II and the Polish intervention. This brought Sweden into the Russian conflict.

After the Polish army defeated Russian-Swedish forces at the Battle of Klushino, boyars overthrew Vasily IV. He was forcibly tonsured as a monk and later handed over to the Poles, dying in captivity in 1612.