 The regions, with a total area of and a population of 3,776,309 inhabitants, were subsequently incorporated into the Soviet Union.On October 26, 1940, six Romanian islands located on the Chilia branch of the Danube, with an area of , were also occupied by the Soviet Army.The Soviet Union had planned to accomplish the annexation with a full-scale invasion, but the Romanian government, responding to the Soviet ultimatum delivered on June 26, agreed to withdraw from the territories to avoid a military conflict.