Figure 1
Naval chokepoints in the North Atlantic and European Arctic. Source: Expert Commission on Norwegian Security and Defense Policy (2015).
Figure 2
Annual number of Russian NOTAM messages in the High North, 2015–2021. Source: authors’ NOTAM dataset.
Figure 3
Duration of Russian NOTAM areas in the High North, 2015–2021. The red line marks the average duration, and the grey area marks the confidence interval (95%). Source: authors’ NOTAM dataset.
Figure 4
Location of Russian NOTAM areas in the High North, 2015–2021. Source: authors’ NOTAM dataset.
Figure 5
Size of Russian NOTAM areas in the High North, 2015–2021. Source: authors’ NOTAM dataset.
Figure 6
Chronological order, latitude, and size of Russian NOTAM areas in the High North. Source: authors’ NOTAM dataset.
Figure 7
Timeline of major Norwegian/NATO and Russian exercises, 2015–2021. Figure prepared by the authors.