The first move made by Józef Chlopicki, who believes that Tsar Nicholas is unaware of his brother's actions and that the uprising can be ended if the Russian authorities accept the Constitution, is to send Count Franciszek Ksawery Drucki-Lubecki to Saint Petersburg to negotiate.

General Chlopicki refrains from strengthening the Polish army and refuses to initiate armed hostilities by expelling Russian forces from Lithuania.

However, the radicals in Warsaw press for war and the complete liberation of Poland.

On December 13, the Sejm pronounces the National Uprising against Russia.