KIEV, July 21. /TASS/. The construction of the fortification structures in the east of Ukraine has been completed, Ukrainian Regional Construction Minister Gennady Zubko twitted on Tuesday.

"The construction of fortification structures in the east of Ukraine has been 100% completed," he wrote. They have been built along the contact line in the Luhansk and Donetsk regions.

It has been reported that a total of 300 defensive works for 600 km of fortifications have been built with the use of 12,000 concrete structures. Three lines of defense have been built since the work started. Ukraine’s 20 regions were involved in the construction of the fortification structures by efforts of 5,000 construction workers with the use of 35,000 wagons of building materials.

According to the Ukrainian government, the total cost of the construction of the line of defense in the Donbas region amounted to $45 million.

On March 9, Ukraine’s President Petro Poroshenko said Ukraine was reinforcing the system of defense in its eastern regions. "We are building a strong, deeply echeloned system of fortification structures in the east," he said. The press centre of the military operation said it was planned to build two defensive perimeters "to prevent enemy penetration into Ukraine’s territory." According to the press service, it was planned to build about 1,500 kilometres of trenches and communication trenches, more than 8,000 entrenchments for heavy weapons, more than 4,000 bunkers and a 60-kilometre-long fence of passive obstacles.