I was astounded by snapseed. Depending on what you want to do you might find it quite capable. It has a raw processing engine that works even with new DNG formats and offers a wide variety of color grading options.
Have not tried any image overlay stuff though
And last I checked invoking Article 5 requires the country to be part of NATO, so even if this were in Sweden, it would not trigger Article 5 as they are not yet a member of NATO…