For other uses, see Border states (disambiguation).
In a European context, the term Border states policy, and Border states in a specific sense, refer to attempts during the interbellum to unite the countries that had won their independence from Imperial Russia due to the Russian Revolution, the treaty of Brest-Litovsk, and ultimately the defeat of Imperial Germany in World War I. The policy aimed at a united defense against the threat of Communist expansionism and World Revolution.
The Border states policy was never particularly successful. Disputes and different allegiances within the group of border states hindered unity.
The following countries were, in this context, considered border states:
The term borderstates refers to the five slave states of Delaware, Kentucky, Maryland, Missouri, and western Virginia that were on the border between the Northern Union states and the Southern slave states that formed the Confederate States of America.
With geographic, social, political, and economic connections to both the North and South, the borderstates were critical to the outcome of the war and still delineate the cultural border that separates the North from the South.
Shortly afterwards, the Provisional Confederate Congress was adjourned on February 17, 1862, on the eve of inauguration of a permanent Congress.