kabul/ISLAMABAD, March 1 -- Pakistan's military, backed by artillery and air power, struck more military installations deep inside Afghanistan overnight and into early Saturday, after Pakistan said it was in "open war" with its eastern neighbour, AP reported. Pakistan claimed more than 300 Afghan forces had been killed since fighting erupted Thursday night during a broad Afghan cross-border attack into Pakistan. Afghanistan rejected the figures as false. The casualty figures provided by either side could not be independently confirmed. P12...