Militants shift tactics to avoid traditional war

THIS summer, Islamic State fighters swept into the expanse of desert straddling the Iraq-Syria border. Riding in pickup trucks mounted with heavy machine guns, supported by skilled snipers and at least one tank, the Islamists captured the town of Rabia in Syria .
Kurdish militia fighters — known by its Kurdish acronym YGP — rushed to the neighbouring town of Al Yarubiyah, on the Iraqi side, in a desperate effort to contain the militants’ advance. What followed was a two-month stalemate, as both sides harassed each other with machine guns, mortars and snipers.