The Arctic exceptionalism is seemingly coming to an end as Russia’s invasion of Ukraine on the 24th of February 2022 has significantly altered the dynamics of the region, as well as the world. An area previously coequal with interstate cooperation and amicable interstate relationships is now redefined as a possible area of great power competition. The purpose of this study is to contribute to a small but growing part of the literature on the effects of Russia’s invasion of Ukraine on the other Arctic states’ Arctic security strategies. This study therefore sets out to answer the following research question: How has Russia’s invasion of Ukraine impacted the security strategies of the Arctic countries? The suggested hypothesis yields that the Arctic countries, following the Russian invasion of Ukraine will alter their Arctic security strategies due to shifted perceptions of ‘hard’ security concerns in the region. The theory utilised suggests that an event much like the Russian invasion of Ukraine will create ripple effects, causing securitisations by other states in the same regional security complex. Findings show that securitisation has taken place in Sweden following the Russian invasion of Ukraine, however, the causal inference cannot be completely established. The cases of the United States and Russia did not display any significant variation before contra following Russia’s invasion and the securitisations which were expected in accordance with theory to ultimately follow. Methodologically, this Structured Focused Comparison is executed as a qualitative cross-case and time-series comparative study using the method of difference.