[1] According to the Vyborg Treatise of 1609, which was concluded between Tsar Vasily Shuisky and Sweden, the latter agreed to provide him with military assistance in the fight against False Dmitry II and the Polish–Lithuanian invaders in exchange for territorial concessions.
[4] De la Gardie concluded an agreement with Polish hetman Stanisław Żółkiewski and went to Novgorod with a force of 300 men; however, the Novgorodians refused to let him enter the city and recommended he leave for Sweden.
[5] After Vasily Shuisky was deposed by the Seven Boyars, De la Gardie sought to take control of the Russian north–west in order to prevent the Poles from extending their power to this region and therefore threaten Sweden's Baltic territories.
[5] In August, the boyar council elected Władysław and the Poles marched to Moscow, after which the Russian state began to fall into its constituent parts.
[8] The representative of the militia, Vasily Buturlin, was unable to secure an agreement with the authorities of Novgorod, and therefore decided to start separate negotiations with Sweden.
[8] Buturlin asked De la Gardie to send troops as soon as possible and he revived the idea of putting forward a Swedish duke as a candidate for the throne.
[8] The Polish governor of Moscow declared war on the militia force and on 23 June, the Council of the Whole Land decided to elect one of the sons of Charles IX as the sovereign, tsar and grand prince of all Russia.
[8] The governor of the city was Ivan Nikitich Odoevsky, who led a garrison of a little more than two thousand people – Cossacks, nobles, Astrakhan archers, as well as a small number of Tatars and monastery servants.
Taking advantage of the fact that the defenders focused on the defense of the eastern side and did not expect an attack from the west, the De la Gardie warriors went on the assault on Okolny City in several areas at once.
Buturlin's warriors, who didn't initially have a good relationship with Odoevsky, after a brief resistance to the Swedes fled to the Trade Side, robbing its along the way, and then retreated to Yaroslavl.
The rest of the agreement repeated the provisions of the Teusina and Vyborg Treaties, maintained the old order in administration and legal proceedings, guaranteed the inviolability of the Orthodox faith and emphasized the alliance against the Commonwealth.