File Photo: Russian ships crossing the Black sea. AP
``All vessels registered under Russian flag, as well as all vessels that have switched their Russian flag, or flag or maritime register registration to any other state whatsoever after Feb. 24, are forbidden access to Bulgarian maritime and river ports,'' the authority said.
Exceptions will be made only for ships in distress or seeking humanitarian assistance, or ships transporting energy products, food and pharmaceuticals to EU countries.
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