The decision to develop St Petersburg rather than expand Narva was taken in the light of long experience going back to Ivan IV and with an eye to long-term strategic advantage. The new settlement was less exposed than Narva or any other point along the southern Baltic. Moreover, it gave access to Russia’s river system, so that, with the development of relatively few canals, it could become an organic part of a single communications system. It also gave access to Western merchantmen, and Peter lost no time in selling them the idea of the makeshift settlement (as it remained for several years) as a profitable new trading port in the making.
Once set on his radical strategy to solve Russia’s Baltic problem, Peter would not contemplate abandoning it, even though the great maw of this infant St Petersburg swallowed resources on a gargantuan scale. Indeed, he would happily have surrendered Narva and his other gains around the Gulf of Bothnia, and made other concessions, had Charles only been prepared to cede that small piece of uncertain ground. But Sweden was not content for Russia to have any outlet to the Baltic at all, and so the struggle had to be played out to a violent finish. In terms of resources, Russia had the advantage, though greater difficulties in mobilizing its forces, but Sweden had the better military machine. In 1707 matters moved towards a climax.
The Russian staff expected a Swedish offensive, but not in the direction from which it came - across the Masurian Marshes, to establish a new forward base at Mogilev in Belarus. However, a defeat in Estonia led the Swedes to abandon plans for an amphibious operation against St Petersburg. So far the Russians had suffered more damage than the Swedes in action, but neither side had gained a decisive advantage. Then the weather intervened. Heavy rains turned the roads along the Swedish line of supply into a quagmire, and with the Russians burning crops in the dry areas Charles was soon facing a problem of feeding his army If the Swedish general Lewenhaupt had arrived earlier, according to plan, bringing supplies, all would have been well for the Swedish offensive into west Russia. But Lewenhaupt was delayed too long, and the Russians used the time to fire the villages and crops along what would have been the Swedes’ line of march eastward. In September the thwarted Charles led his army south towards Ukraine. Soon afterwards the news came that Lewenhaupt had been defeated. The die had been cast.
The outcome of the war was turning not on the size and the leadership
Charles had good reason to hope that the Turks, Tatars, Poles and Ukrainian Cossacks — though subject to the Russian crown — would all join him in the fight against Peter. In the event only Hetman Ivan Mazepa of Ukraine did so, and even he could not bring all his Cossacks over with him. Soon after he had declared for Sweden, a Russian force descended on his base at Baturin, sacking the place and massacring many of its inhabitants. Still, the Swedes had the prospect of wintering in food-rich country with some local support and a less inclement climate. But then the weather intervened again. Winter came early that year, and some Swedish soldiers froze in the saddle that Christmas. The Russians may have sustained many more casualties from exposure to the elements, but they could be replaced. The Swedes could not make good their losses. Spring came, and the Russians destroyed the Zaporozhian Sech, eliminating any chance of a widespread popular movement in support of Mazepa. Then, in June 1709, having for so long avoided a major battle, they offered it. But, true to form, it was Charles who attacked.
