Quoted from an essay I found, with emphasis added:
So the PoD is as follows the Tsar does diecide to openly aid the US in 1863 with naval and let's say some small to moderate army support in order to cement future good relations with the US. How does this effect the Civil War and Europe?
*[1] The January Uprising
Russia was the first nation to stand behind the Union in friendliness. The nature of this relationship was not one of support - the Russian leadership did not love democracy - but one of convenience. Russia aligned itself with the United States because England and France, Russia’s enemies, aligned themselves more closely with the Confederate States. Although the Russian aristocracy had no use for democracy, they feared insurgency. Along with all other conservative monarchs in Europe, Tsar Alexander II would not recognize the Confederacy mainly because he considered it a revolutionary regime in an era of frequent revolutions and regime changes in Europe. It is apparent that the Tsar, as well as other monarchs, feared that the insurrection mounted by the Confederacy would spark the beginning of another round of revolutions throughout Europe. It is interesting to note at this point that extremely few European nations retain their monarchs a century later.
Russia had a second motive to align itself behind the United States. A reunited United States would potentially be a powerful ally for the Russians, an ally that Russia desperately needed after losing the Crimean War. In 1863, Tsar Alexander II ordered the Russian Atlantic Fleet and the Pacific Fleet to United States ports for the winter. Many construed this action to mean that Russia was openly aiding the Union and that the Russian Navy would supplement the Federal Navy against the Confederacy. However, this apparent meaning proved false. Tensions between Russia and England were escalating over Russian actions against the Polish[1] and war between the two was on the horizon. The Tsar sent the navy to the United States so that the naval fleets would not be trapped by the winter ice in arctic Russia ports. An underlying motive probably was to warm American support for Russia in case of war with England.
So the PoD is as follows the Tsar does diecide to openly aid the US in 1863 with naval and let's say some small to moderate army support in order to cement future good relations with the US. How does this effect the Civil War and Europe?
*[1] The January Uprising