Poland and the Baltic states have called on the European Union to build a 700-kilometer (430-mile) wall along their borders with Russia and Belarus, with a map showing the area such a construction would cover.

Lithuania, Latvia and Estonia have joined forces with Warsaw in calling for the bloc to build a defense line to protect the NATO members against the threat of Russia, over security concerns fueled by Moscow’s invasion of Ukraine.

The wall along the EU external border with Russia and Belarus “will address the dire and urgent need to secure the EU from military and hybrid threats,” a letter to the bloc by the countries said, according…