Syria: Joined with Israel Against Ahaz and Besieged Jerusalem
Source: TTT
2 Kings 16:5
Then Rezin king of Aram and Pekah son of Remaliah king of Israel came up to wage war against Jerusalem. They besieged Ahaz but could not overcome him.
Isaiah 7:12
But Ahaz replied, “I will not ask; I will not test the LORD.”