WHAT+IMPACT+COULD+THESE+LEAKS+HAVE+ON+THE+US?

Politically the leaks damaged relations with Afghans and other nations. It raises questions about the militaries rules of engagement. Afghans who cooperated with the government and NATO forces could be identified and killed. Nations are able to find out who had insulted or spied on them, thus putting lives in danger. Socially, other nations can blacklist the US and stir up dispute with them.