In 1436, the Swedish council sent a proposal to the Livonian master of the order, Heinrich von Vincke, about a possible alliance against the Novgorodians.

[4] Christopher would later promise the Teutonic Order that he would not allow his kingdoms to trade with Novgorod,[4][2] and he also sent Karl Knutsson with a force from Viborg against Pskov.

[2] In May 1444, it was clear to Karl Knutsson that the Novgorodians were about to attack Narva, and he warns the Estonians in the area about what was about to occur.

In the autumn 1444, the awaited Russian attack began and Christopher sent Karl Knutsson with troops to support Narva.

[3] Karl Knutsson is considered to have saved the Narva area from worse clashes with Novgorod through skillful diplomacy.