See studies by W. Brueggemann (1984), C. Westermann (1984-86), N. M. Sarna (1989), and R. Alter (1996).
Resen is stated, according to Genesis 10:12, to have been located between Nineveh and Calah. It was stated to be the greatest of Nimrod's cities. Its exact location is today unclear. According to Genesis, it is within the vicinity of ancient Assyria, which should place it in Iraq, but the exact location is not known. Some have identified it with the ruins of Yassin tepe and some with the ruins of Karamles.
8 Cush was the father [d] of Nimrod, who grew to be a mighty warrior on the earth. 9 He was a mighty hunter before the LORD; that is why it is said, "Like Nimrod, a mighty hunter before the LORD." 10 The first centers of his kingdom were Babylon, Erech, Akkad and Calneh, in [e] Shinar. [f] 11 From that land he went to Assyria, where he built Nineveh, Rehoboth Ir, [g] Calah 12 and Resen, which is between Nineveh and Calah; that is the great city.