Ukrainian troops defending the town of Avdiivka in eastern Ukraine are under growing pressure, the Ukrainian commander in charge said on Friday. “Fierce fighting is taking place in the town. Our troops are deploying all available forces and resources to hold back the enemy,” the commanding general for this section of the front, Oleksandr Tarnavskyi, said at dawn. He called the situation “difficult, but under control.” The Ukrainian defenders were fighting back under “inhuman conditions,” the press service of the 110th Brigade of the Ukrainian army deployed in Avdiivka wrote on Facebook on Frid…