The Visegrád Group derives it's name from a meeting of the Bohemian (Czech), Polish, and Hungarian rulers in Visegrád in 1335. Since then the Visegrád nations have participated in this military, economic and cultural alliance. Note that this is a formal alliance, with formal treaties and a Secretariat created in 1991.
Recently Bulgaria and Romania have been participating in Visegrad activities. Bulgaria's Foreign MInister joined the Visegrad Foreign Minister's meeting. Romania & Bulgria joined with Visegrád to present a common agricultural policy to the EU. Austria's nationalist Prime MInster has recently declared he was re-positioning Austria to provide a gateway between the European Union and Visegrád, with talk of a VisigrádPlus option. VisegrádPlus is considered the re-integration of Central Europe.
Why is this so important? Simply because the Visegrád nations have refused to let their lands be invaded by the moors in this recent Second Islamic Invasion of Europe. Their societies have remained free of the violence that is affecting the nations that have been invaded, their economioes are strong and their will to defend their culture and their religious freedoms are unbowed. Importantly, these nations have a strong defence force and a strong psyche of pride in their nation. Nationalism is not dead in the The Visegrád Group, indeed it is not even a dirty word. It is this nationalism that will provide the "line in the sand" and defend this large and contiguous land area. With a population of 65 million and a combined GDP in excess of USD1 Trillion, this is enough to get it done.Veni, vidi, Deus vicit - "I came, I saw, God Conquered" John III Sobieski
Let us not forget that Poland saved Europe in the Battle of Vienna in 1683 and they will shortly be called upon to defend Europe again.