Islamic State guerrilla attacks point to its future strategy

By Angus McDowalland Tom PerryBEIRUT (Reuters) - Syrian and Iraqi forces closing in on the last scraps of Islamic State's caliphate straddling the remote border area between the two countries have already witnessed the jihadists' likely response.While their comrades mounted last stands in their Syrian capital of Raqqa and the city of Hawija in Iraq, IS militants seized the Syrian town of al-Qaryatayn and launched its biggest attack for months in Ramadi late last month.In Iraq, where Islamic Stat