KABUL, March 25 (Reuters) - Afghan and NATO troops killed 12 suspected Islamist insurgents overnight when they tried to attack a military base in a southeastern province on the border with Pakistan, the coalition said on Sunday. Fighting between the Taliban rebels and troops has escalated with the end of winter in Afghanistan in what is expected to be a crunch year for both sides. The latest incident took place near Fire Base Tillman in Paktika Province, and the attackers were repulsed with small arms fire, backed by air support and artillery, a statement from the coalition said. Two coalition and two Afghan soldiers received minor wounds, it added.
