On September 24, 1939, with the fall of Poland to Nazi Germany and the USSR imminent and in light of the Orzeł incident, the Moscow press and radio started violently attacking Estonia as "hostile" to the Soviet Union. Warships of the Red Navy appeared off Estonian ports, and Soviet bombers began a threatening patrol over Tallinn and the nearby countryside. Moscow demanded that Estonia allow the USSR to establish military bases and station 25,000 troops on Estonian soil for the duration of the European war. The government of Estonia accepted the ultimatum signing the corresponding agreement on September 28, 1939.