In March 1867, Austria conducted a massive military exercise on the Prussia-Austria Border, which alarmed the Prussians.
Having just finished the Prusso-Russian War, they were busy licking their wounds and did not have the courage to face another war with Austria.
If war were to break out at this time, not only would all previous victories have to be regurgitated, but self-preservation would be difficult to achieve.
In the Berlin Palace, Foreign Minister McKate said, "The Austrians are making a show of force; they won't start a war at this time.
Once war breaks out, the Russians will definitely continue the conflict. The Tsarist Government only needs to follow behind, doing the minimum, and they can take back Poland and the Baltic region.