BEIRUT - Hezbollah chief Hassan Nasrallah on Saturday gloated over UN chief Ban Ki-moon's concerns about the military prowess of his Lebanese Shiite militant party, which he vowed would not be disarmed. "I felt happy when I heard that he (Ban) said he was concerned about our military power," Nasrallah said in a televised address. "This concern reassures and pleases us," the Shiite leader added. "We do not care if the United States and Israel are concerned." Nasrallah's comments came a day after the visiting UN chief said he was "deeply concerned" over the military capacity of the Iranian- and Syrian-backed militant group.