NATO troops risk facing aviation fuel shortages in a large-scale conflict over the next decade, the alliance's Center of Excellence for Energy Security reported in a report to Politico newspaper.
Europe's shift away from fossil fuels and its reduction in refining capacity create "dangerous vulnerabilities" as current reserves are insufficient for a large-scale conflict involving European countries and their North American allies.
The document was circulated at a high level within NATO, although it reflects the independent views of its authors, rather than the bloc's official position.