The Rise of the Russian Empire
The year is 1724. Brandenburg, a relatively small german state, has just allied with the mighty Kingdom of France, Europe's first military power, and declared war on Austria and England, claiming most of the German north. Seeing Austria aggressed, a safe border for Russia and an occasional friend, while Prussia at the same time claimed territories held by long-time allies and friends in Denmark, England and Moldavia, the Tsar demanded that it stops its claims immediately, threatening military action otherwise. The French war machine rolled through Austria, making quick gains, with Prussia focussing on relatively defenseless north german provinces and the Iberians fighting the English on the high seas.
Seeing Prussia unwilling to give in, France making great progress in the South, England being attacked mercilessly and Austria almost on the verge of collapse, the Tsar acted, and declared war on Brandenburg, followed by its loyal allies in Denmark, Poland, Moldavia, the Ottomans and the Mughals; turning this war into the first true World War. An army was sent through Austria to help, while another was sent to attack Brandenburg. Making initial victories in Prussia, Memel, Pommern and taking the capital of Brandenburg briefly, the Russian army was destroyed by a French-Brandenburg army, losing 2 great leaders and allowing Brandenburg to recover its territories West of Poland. In Austria, great battles were waged, but the Russian army was unable to fight effectively, suffering large loses to attrition and larger french armies. The Russian military helped Austria hang on, but couldn't succeed in forcing a standstill, and Austria was beaten back, with the Ottoman fleet destroyed by the Spanish. The war was far from one-sided, but the Russian could not achieve their goals. By 1732, the Ottomans had conceded Colombo, Corfù and Judea to Spain, which promptly create the Kingdom of Jerusalem while France took Tirol, Salzburg and Steiermark from Austria, gaining a border with Vienna. The superior number and technology of the French had won them the day.
Six years later, this defeat would be sufficient to convince the nations of Europe, England and Austria to join the Russian alliance, seperating Europe into two huge powerblocks. Austria tried to provoke France into a private conflict, but the French refused, as Spain reignited the previous war in 1739 by declaring war on the Ottomans. This time, it was a conflict opposing France-Prussia-Spain-Portugal and Russia-England-Austria-Ottomans, as the Russian alliance split when Moldavia, Poland, Denmark and the Mughals refused to answer the Ottoman's call to arms. Poland would then rejoin the alliance, but not the war. This war would be a little more even, although Friedriech II made the difference and once again forced the Austrians to capitulate this time only 3 years into the conflict, ceding Veneto to Spain and Silesia to Prussia. As the Russian troops walked home, Poland was annexed into the Russian empire, and the Tsar realised the truth: He now had two borders with the aggressive Prussia. Something had to be done to humble the France-Prussian-Iberian alliance before Moscow was under attack. Already Prussia was threatening Denmark. Poland would serve as the perfect staging ground for ventures into Central Europe.
The two causes of Russian ineptitude in Central Europe had been dealt with: Austria was part of its alliance, and Poland was a part of Russia. Now, Russia had to find a way to achieve victory and thus dominance on Central Europe. Prussia would provide it with the perfect opportunity when Friedriech II left Europe on his dreams of colonial conquest. Sharing intelligence with the Dutch, and planning with England and Austria, Russia launched a pre-emptive attack on Prussia-France with its allies, where England killed Friedriech II on the high seas and attacked France in Canada, Austria fighting France in Central Europe, and Russia invading Prussia with two major armies, rolling past the Prussian capital in a matter of months and making its government collapsed. With Prussia dead, and Russia now sending armies to battle France in Austria, while Spain started to wrestle France in turn, France was finally forced to capitulate, and Russia achieved the stated war objectives: Austria gained its core provinces back, Prussia was destroyed, and France lost 2 Centers of Trade, one to Russia and one to England. That Spain and Portugal took that opportunity to leave the alliance was an added bonus.