[1] Charles X of Sweden would not accept any other outcome than Sweden's receipt of Akershus county, in exchange for the return of Trøndelag and Bornholm to Denmark-Norway; Frederick III of Denmark on the other hand refused to abide by the terms of the Treaty of Roskilde, instead wanting to revert to the conditions of the Second Treaty of Brömsebro (1645).

Frederick had given his word of honour to protect his faithful subjects to the utmost; he kept his promise by demanding the return of Bornholm to Denmark despite the threats of Sweden and the negotiating powers.

It was then suggested that Denmark would provide compensation by ceding several estates held by Danish noble families in Scania to the crown of Sweden.

[5] At this point, however, the negotiations started to derail as the mediating countries' representatives became involved in intrigues that weren't in the interests of their client states.

Four days later the remnants of the Swedish army in Zealand, now numbering 3,000, finally began leaving the outskirts of Copenhagen.