Russia`s `war` against N was economic and had been going on successfully for some years.
If Alexander was seriously preparing for an invasion in early 1812, why were all the plans being discussed in Russian HQs about how best to defend Russia against N`s invasion, the preparations for which had been clearly seen in the GD of Warsaw for months?
Why are there no records of discussions of invasion plans by the Russian army in the spring of 1812?
Where were the troops for this invasion?
Why was the camp at Drissa built?
What is your source for the claim that A was actively planning an invasion of western Europe in the spring of 1812?