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California second-grade teacher becomes rare traveler to visit every country in the world
Today· 4 days agoLucy Hsu, who teaches second grade in San Jose, California, has officially visited 193 nations. Most...
Air Defense: Satellite Photos Measure Russian Improvisation
Strategy Page· 1 week agoOctober 2, 2022: A survey of Russian anti-aircraft batteries, using commercial satellite photos, has shown that Russia has been shutting down S300 (surface to air missiles) batteries around ...