The Pentagon is reportedly raising concerns about a growing espionage threat involving Israel, according to accounts citing U.S. officials and developments tied to nuclear-related discussions with Iran. Multiple reports say the United States and Israel have long been aware of mutual intelligence collection, but the focus has shifted to whether recent Israeli efforts to obtain information have intensified. In particular, the reporting links the concern to Israeli intelligence activities conducted during or around talks involving Iran. One account characterizes the issue as potentially affecting how intelligence is shared among close partners, describing the matter as a development that could carry operational and diplomatic consequences. The overall picture presented across the sources is not that espionage is new between the two countries, but that the Pentagon views the current level or focus of collection as a step that may be crossing established boundaries. The reports also frame the warning as coming at a time when U.S.-Iran engagement is underway, adding sensitivity to intelligence relationships.