Haran

Where is "Haran" (Acts 7:4)?
Haran is an ancient city about 300 miles (480 kilometers) northeast of Israel in what is eastern Turkey today. Even though Haran is no more than a ruin next to a small village now, during the time of Abraham, it was a city positioned on a major road connecting larger cities. The ancient city of Haran should not be confused with Haran, the brother of Abraham (whose name at birth was Abram) and the father of Lot: "This is the genealogy of Terah: Terah begot Abram, Nahor, and Haran. Haran begot Lot. And Haran died before his father Terah in his native land, in Ur of the Chaldeans" (Genesis 11:27-28).

Who are "Chaldeans" (Acts 7:4)?
Chaldeans were the people of Chaldea, the southern province of the ancient Mesopotamia. It's capital was Ur, which was near the modern city of Nasiriya in southern Iraq.

So what is Stephen claiming?
Abraham is originally from Chaldea of Mesopotamia (southern Iraq). On God's command, he moved northwest to Haran, and when his father died, moved southwest to the promised land of Canaan, which is Israel today.

Is he right?
And Terah took his son Abram and his grandson Lot, the son of Haran, and his daughter-in-law Sarai, his son Abram’s wife, and they went out with them from Ur of the Chaldeans to go to the land of Canaan; and they came to Haran and dwelt there. So the days of Terah were two hundred and five years, and Terah died in Haran. Now the Lord had said to Abram: “Get out of your country, From your family and from your father’s house, to a land that I will show you. I will make you a great nation; I will bless you and make your name great; and you shall be a blessing. I will bless those who bless you, and I will curse him who curses you; and in you all the families of the earth shall be blessed.” So Abram departed as the Lord had spoken to him, and Lot went with him. And Abram was seventy-five years old when he departed from Haran. Then Abram took Sarai his wife and Lot his brother’s son, and all their possessions that they had gathered, and the people whom they had acquired in Haran, and they departed to go to the land of Canaan. So they came to the land of Canaan. (Genesis 11:31-12:5)

Why didn't Terah also take Nahor, his other surviving son, to Haran?
While Genesis 11:31 does not mention Nahor, it also doesn't preclude Nahor from having accompanied Terah and Abram, his father and brother, respectively, to Haran. In fact, after being instructed by Abraham to "go to my country and to my family, and take a wife for my son Isaac" (Genesis 24:4), his servant went to "the city of Nahor" (Genesis 24:10) and met "Laban" (Genesis 24:29), who is identified as "the son of Nahor" (Genesis 29:5) and residing "in Haran" (Genesis 27:23). This means that Haran is the city of Nahor, who must have either moved there from Ur with Terah and Abram or followed after them to there. In any case, Haran is the place Abraham called, "my country" (Genesis 24:4), and from where his son (Isaac) and grandson (Jacob) both took their wives (see Genesis 24 and 29).