Churchill was Secretary of State for War at the time
of this source.
In 1919 the Bolsheviks controlled Central and Northern
Russia. Churchill himself had been with British forces in the Northern Russian
port of Archangel.
When Churchill mentions the Armistice he means the Armistice
that ended the First World War in November 1918.
Japan was one of the countries which sent troops and
supplies to help the Whites against the Bolsheviks in the Civil War.
Denikin was one of the leaders of the White forces in
the Civil War.
