Though there are some ambiguities here (“the Babylonians invented writing”) and a dollop of Albrightian maximalism (I am amazed at Millard’s cognitive dissonance), Millard is solid on epigraphy in this video. I agree with most of his points, including those on Qeiyafa. I have discussed Kuntillet ‘Ajrud, its probable status as a caravansary, and its early-mid 8th C BC date in the below video.
According to 2 Kings 14, after the battle of Beth-Shemesh, Joash took Amaziah’s land as far as Jerusalem, broke down a large part of the N. wall of the Temple Mount, and took great amounts of loot. But, how far-reaching was the effect of this defeat? The Israelite site of Kuntillet ‘Ajrud, located at 30°11’35″N, 34°25’16″E, dating to the Israelite Iron IIB (8th C BC), sheds some significant light on this question, showing the Israelites dominated Judah enough to establish a small settlement deep to the south of its territories. If this is so, Israel dominated Juah enough to use its roads for its purposes without any interference, and, therefore, was certainly powerful enough to control all affairs of Judah.