 Complete the following phrase:  Although Avdiivka was already suffering from the War in Donbass in June 2014 trams in Avdiivka continued to operate. After three trams were hit by artillery fire in January 2015 the tram line was completely dismantled. By late March 2015 tram traffic was completely stopped due to artillery bombardments and power failures. In 2016 a part of the tram line was reopened, but in January 2017 the tram line was permanently closed because of 