December 26, 1825 a Russian Troop of 30,000 soldiers marched on into Saint Petersburg. In this revolt called the Decembrist Revolt, the troops were protesting against Tsar Nicholas I's assumption of the throne after his brother Constantine stepped down from the throne. Unfortunately their revolt was unsuccessful.
Tsar Nicholas I wanted to expand Russia into the Ottoman Empire. Which included countries France and Sardinia. Thus, the Crimean war started. The war was fought from October 1853 - March 30,1856. This war was a war of Britain, Turkey, France, and Sardinia against France to protect the Holy Land, which was a part of the Ottoman Empire. Russia lost and the Treaty of Paris was written.
Let us expand Russia!
Russia and Japan both wanted to expand their countries into Asia. However, there was two countries that either one could have, Manchuria or Korea. This lead to the Russo War. This war started February 8, 1904 - September 5, 1905. Unfortunately Russia lost the war and Japan had become the most dominant power in east Asia. As a result the Treaty of Portsmouth was signed to keep peace between Russia and Japan.