These fears are reinforced by Russian President Vladimir Putin's repeated threats to NATO countries.A chain of strongholds will be set up along Latvia's border with Russia and Belarus, including defensive fortifications, various obstacles, and ammunition depots, according to LSM.The first defensive line is being built near the Terekhovo border crossing in Ludza municipality at a distance of around a kilometer from the border with Russia."We are digging up the road and making an anti-tank ditch here so that vehicles cannot move along this road. Including tanks," said Lieutenant Colonel Kaspars Lazdins, engineering inspector of Latvia's National Armed Forces."This ditch has specified parameters, and it has the appropriate depth to fulfill its task." Latvia's “anti-mobility plan” includes both artificial and natural obstacles such as forests and rivers, according to Lazdins.