In Afghanistan, 7 American troops were injured today in an insider attack by an Afghan soldier at a military base. <br/><br/>The shootout at Camp Shaheen near northern Mazar-i-Sharif city is the second attack this month where Afghan soldiers turn their weapons on international forces assisting them.<br/><br/>It comes as Washington is expected to announce an increase in the US military deployment in the country to bolster Afghan forces who are struggling to contain the Taliban's nationwide offensive. <br/><br/>The Afghan conflict is the longest in American history, with US-led forces at war there since 2001, after the ousting of the Taliban regime.