Four Chinese airplanes operated by the Chinese civil aviation authorities penetrated deep into Russia’s airspace on July 24.
The planes flew over the forbidden city of Severst where the ultra-secret Siberian Chemical Combine is located, according to various Russian media reports.
The Siberian Chemical Combine was built by the Soviet Union in early 1950s and it has been the premier nuclear bomb-making site, focused on producing plutonium and highly enriched Uranium [HEU] that is weapon graded.
For nearly seven decades, the airspace above Severst has been classified as forbidden, and no airplane has been allowed to come near it.
Full article: Meanwhile in Siberia: Chinese planes overfly top secret nuke facility (World Tribune)
Note: Full viewing of the article requires payment. Global Geopolitics benefits in no way.