The Visegrad Pact is an economic and military alliance of nations along the European Plain that once formed what was once the Eastern Bloc. They are primarily successor states of either Warsaw Pact nations or former Soviet Republics.
The Visegrad Pact traces its inspiration all the way back to the period in between the World Wars, by Polish leader Jozef Pilsudski , for a federation, under Poland's aegis, of Central and Eastern European countries. Invited to join the proposed federation were the Baltic states of Lithuania, Latvia, and Estonia, along with Finland, Belarus, Ukraine, Hungary, Romania, Yugoslavia, and Czechoslovakia. The alliance was meant to serve as a deterrent against invasion by either Germany or Russia.
In the immediate post-Soviet world, as Poles and others went about reclaiming their individual sovereignties, they knew about the looming threat posed by an irredentist Russian rump successor state. Slowly but surely, an alliance of nations would form of weak nations no longer under the thumb of the Soviet Empire. Membership would be open to any nation desiring to ensure its long-term viability and prevent the rise of a renewed Russian threat, or in the case of the Balkans, aggression by Serbia or Turkey. Geographically, the alliance would span from the Adriatic to the shore of the Baltic Sea.