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A total of 89 kilometers of anti-tank trenches are planned. So far, four kilometers have been completed. According to Latvian Television, the first 27 kilometers are expected to be completed by next spring. Massive concrete obstacles, known as dragon's teeth, are being installed in three rows along the border. Each structure weighs 1.5 tonnes and stands slightly more than one meter tall. An anti-tank trench will subsequently be dug alongside them. In the border area of Balvi Municipality, National Guard troops are completing the deployment of defensive infrastructure. Anti-tank trenches more than five meters wide have already been dug there. Dragon's teeth will be added later.
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