Afghanistan

"You see, Eloise, two weeks from now, I'm scheduled to go to Afghanistan and test a weapon so secret that I can't even tell you its name."

- Tony Stark to Eloise

Afghanistan, officially the Islamic Republic of Afghanistan, is a landlocked country in Asia.

History
Tony Stark paid a visit to that country where he demonstrates the power of the Jericho missile to the military spectators. After that, he was escorted in an armed convoy which was later attacked by the Ten Rings.

Amira Ahmed did a documentary here that Stark watched as he was building his second suit of armor.

After Thor subdued multiple S.H.I.E.L.D. agents, they hold him in a S.H.I.E.L.D. holding cell. Phil Coulson wanted to know where he received the training needed to subdue them, and Afghanistan is one of the locations he mentions as a possibility.

Brian Hayward was stationed in Afghanistan for three years before returning to the United States and being recruited as an operative for the Centipede Project.