Question: Where did this polar explorer and commander in the Imperial Russian Navy establish an anti-communist government under whom Robert Bitker served during the Russian Revolution of 1917?

Context paragraphs:
Soviet cruiser Krasnyi Krym: "Krasnyi Krym (Russian: Красный Крым - Red Crimea)" was a light cruiser of the Soviet Navy.  She was laid down in 1913 as "Svetlana" for the Imperial Russian Navy, the lead ship of the "Svetlana" class .  She was built by the Russo-Baltic Shipyard in Tallinn, Estonia and launched in 1915.  Her hull was evacuated to Petrograd when the Germans approached the port in late 1917 and laid up incomplete during the Russian Revolution.  The ship was completed by the Soviets in 1926.  During World War II she supported Soviet troops during the Siege of Odessa, Siege of Sevastopol, and the Kerch-Feodosiya Operation in the winter of 1941—42.  "Krasnyi Krym" was awarded the Guards title on 18 June 1942.  The ship was reclassified as a training ship in November 1954 before being scrapped in July 1959.

USS H-7 (SS-150): USS "H-7" (SS-150) was a H-class submarine originally built for the Imperial Russian Navy.  Six of these were not delivered pending the outcome of the Russian Revolution of 1917 before being purchased by the United States Navy on 20 May 1918.

Russian battleship Potemkin: The Russian battleship "Potemkin" (Russian: Князь Потёмкин Таврический, "Kniaz Potyomkin Tavricheskiy" , "Prince Potemkin of Taurida") was a pre-dreadnought battleship built for the Imperial Russian Navy's Black Sea Fleet.  It became famous when the crew rebelled against the officers in June 1905 (during that year's revolution), which is now viewed as a first step towards the Russian Revolution of 1917.  The mutiny later formed the basis of Sergei Eisenstein's 1925 silent film "The Battleship Potemkin".

Imperial Russian Navy: The Imperial Russian Navy (Russian: Российский императорский флот ) was the navy of the Russian Empire.  It was formally established in 1696 and lasted until being disrupted during the February Revolution of 1917.  It developed from a smaller force that had existed prior to Peter the Great's founding the regular Russian Navy during the Second Azov campaign.  It was expanded in the second half of the 18th century and by the early part of the 19th century, it reached its peak strength, behind only the British and French fleets in terms of size.

USS H-8 (SS-151): USS "H-8" (SS-151) was a H-class submarine originally built for the Imperial Russian Navy.  Six of these were not delivered pending the outcome of the Russian Revolution of 1917 before being purchased by the United States Navy on 20 May 1918.

Shtandart (frigate, 1703): The frigate Shtandart ("Russian: Штандартъ ") was the first ship of Russia's Baltic fleet.  Her keel was laid on April 24, 1703 at the Olonetsky shipyard near Olonets by the decree of Tsar Peter I and orders issued by commander Aleksandr Menshikov.  The vessel was built by the Dutch shipwright Vybe Gerens under the direct supervision of the tsar.  She was the first flagship of the Imperial Russian Navy and was in service until 1727.  The name "Shtandart" was also given to the royal yachts of the tsars until the Russian Revolution in 1917.  Tsar Nicholas II's royal yacht was last of this series.

Alexander Kolchak: Alexander Vasilyevich Kolchak CB (Russian: Алекса́ндр Васи́льевич Колча́к , 16 November [O.S. 4 November] 1874 – 7 February 1920) was a polar explorer and commander in the Imperial Russian Navy, who fought in the Russo-Japanese War and the First World War.  During the Russian Civil War, he established an anti-communist government in Siberia—later the Provisional All-Russian Government—and was recognised as the "Supreme Ruler and Commander-in-Chief of All Russian Land and Sea Forces" by the other leaders of the White movement from 1918 to 1920.  His government was based in Omsk, in southwestern Siberia.

USS H-9 (SS-152): USS "H-9" (SS-152) was a H-class submarine originally built for the Imperial Russian Navy.  Six of these were not delivered pending the outcome of the Russian Revolution of 1917 before being purchased by the United States Navy on 20 May 1918.

Robert Bitker: Robert (Boris) Bitker (1907-1977) was a military commander of the Zionist paramilitary group Irgun.  He was born in Warsaw, Poland in 1895 and attended a Catholic high school.  At 19, he was drafted into the Polish Army, but soon fled to Russia where he fought in the White Army under Kolchak during the Russian Revolution of 1917.  In the early 1920s, he emigrated to the U.S., and lived briefly in Los Angeles where he worked in the film industry.  From the U.S. he went to Shanghai, China, where he joined the Revisionist Zionist movement and was one of the originators of the Jewish battalion in the volunteer corps in Shanghai which was commanded by the British.

Military history of the Russian Empire: The military history of the Russian Empire encompasses the history of armed conflict in which the Russian Empire participated.  This history stretches from its creation in 1721 by Peter the Great, until the Russian Revolution (1917), which led to the establishment of the Soviet Union.  Much of the related events involve the Imperial Russian Army, Imperial Russian Navy, and from the early twentieth century, the Imperial Russian Air Service.

Supporting paragraphs: Robert Bitker Alexander Kolchak
Answer: Siberia