Sigismund, also recently crowned King of Poland, sends envoys to Moscow in 1507 requesting the to return of the territories acquired by the 1503 truce.

At the same time, Crimean Khan Meñli I Giray breaks off his alliance with Moscow due to its campaign against Kazan.

Sigismund receives an iarlyk from the Khan for the Muscovite territories of Novgorod, Pskov, Ryazan.

Sigismund urges the Lithuanian parliament in February 1507 to declare war on the Grand Duchy of Muscovy, which subsequently will strengthen Polish-Lithuanian suzerainty in the east.

Sigismund prepares for a massive military campaign against Russia.

Some fighting ensues, but no significant battles occur.