Proceeding from my broader interest in Nordic identity and regionalism, I have in particular focused on the movements in World War I-period Sweden, Finland and Estonia that advocated a form of activist Swedish foreign policy. Hoping to see Sweden ally itself with Germany and enter the war against Russia, they expected to see a Swedish re-conquest of Finland and the Baltic Provinces (which had been Swedish in the 17th century). The involved Finns and Estonians genuinely looked upon neutral Sweden as a possible saviour, and forged links with radical conservative (proto-radical right wing) movements in Sweden. This project has produced this far a number of journal articles and a special issue of the Estonian Historical Journal (co-edited with Carl Marklund).

Relevant publications:

• Swedish political attitudes towards Baltic independence in the short 20th century, Ajalooline Ajakiri, 3/4, 2016, pp. 397-430.
  
• Hegemony and liberation in World War I: Plans for new Mare Nostrum Balticum, Ajalooline Ajakiri, 3, 2015, pp. 249-284.
• Estonia Gravitates Towards Sweden: Nordic Identity and Activist Regionalism in World War I. University of Tartu Press, 2014.
• Sweden's Historical Mission and World War I: A Regionalist Theory of Swedish Activism, Scandinavian Journal of History, 1, 2014, pp. 126-146.
• Intriigid, provokatsioonid ja iseseisvuse sünd: Eesti välisdelegatsioon ja Aleksander Kesküla, Ajalooline Ajakiri, 3, 2013, pp. 321-374.
  
• "Grundbesitzer aus Estland": Activist regionalism in the Baltic Sea Area in 1916, Ajalooline Ajakiri (special issue: Baltic regionalism/Balti regionalism), 1/2, 2012, pp. 137-165.
• Siwertz som aktivist: „Elders återsken” och första världskriget. Anna Forssberg, Per-Olof Mattson (eds.). Sigfrid Siwertz. En författares uppgång och fall, Karlstad University Press, 2017, pp. 63-83.