Where is the country irk?

IRK stands for

Islamic Republic of Kamistan

The Islamic Republic of Kamistan (also known as the IRK, the Islamic Republic or simply as Kamistan) was the Middle Eastern nation led by Omar Hassan

The skyline shown as the Islamic Republic of Kamistan is, in fact, from Cairo, Egypt.

What is probably the flag of the IRK was seen during Day 8: 3:00am-4:00am when terrorists put it in the background for their video feed.