The Trump administration has launched an unusually broad investigation into suspected leaks of classified information about U.S. weapons stockpiles, with investigators subjecting around 50 members of the Pentagon’s Joint Staff to polygraph tests, according to reports.
The investigation comes after media reports revealed sensitive details about declining U.S. supplies of advanced weapons and munitions during military operations involving Iran. President Donald Trump is reportedly furious about the disclosures, which officials view as a potential threat to national security and military readiness.
Pentagon launches sweeping leak investigation
The polygraph examinations reportedly took place during an investigation in August. The group included senior military and civilian personnel working with the Joint Staff, according to reporting cited by CBS News and other outlets.
Investigators were attempting to determine whether officials had disclosed classified information to journalists.
The focus of the investigation was particularly sensitive because the leaked information concerned U.S. weapons inventories. Reports had highlighted the rapid use of advanced munitions and concerns about dwindling stockpiles during the conflict with Iran.
Why Trump is reportedly angry
The disclosures have reportedly triggered strong frustration inside the administration.
Only a limited number of officials had access to some of the classified information, according to sources cited by CBS News. That has raised questions within the government about how the information reached journalists and whether the disclosures could have compromised national security.
The investigation is therefore not simply focused on identifying an embarrassing source. Officials are also examining whether sensitive military information could have been deliberately passed to outsiders.
The Pentagon has emphasized that protecting classified information is essential to national security and the safety of U.S. troops.
About 50 officials reportedly tested
The scale of the polygraph operation has drawn attention.
Several dozen officials reportedly underwent testing, including personnel associated with U.S. Central Command and other military commands. CBS News reported that the volume of testing was unusual, even though polygraph examinations can be part of security procedures for senior officials.
However, not every senior military leader was tested. CBS reported that Gen. Dan Caine, chairman of the Joint Chiefs of Staff, was not among those subjected to a polygraph.
Officials also said that those tested did not fail the questions specifically designed to determine whether they had leaked information to the media.
What the leaks revealed
The investigation followed reporting about the strain on America's stockpiles of sophisticated weapons.
During military operations involving Iran, news organizations reported on the consumption of advanced U.S. munitions, including systems that can be expensive and difficult to replenish quickly.
Such information can be highly sensitive because knowledge of weapons availability can provide adversaries with insight into U.S. military capabilities, limitations and readiness.
That makes the leak investigation particularly significant as Washington continues to manage the military consequences of the conflict.
Pentagon says it takes leaks seriously
The Defense Department has declined to discuss specific personnel or investigative matters.
A Pentagon spokesman told CBS News that the department does not comment on internal investigations but takes unauthorized disclosures of classified national-security information extremely seriously. The department also stressed the importance of protecting classified information for U.S. forces and national security.
The investigation reflects the Trump administration's broader focus on unauthorized disclosures from within the federal government.
For the officials involved, the episode also underscores the increasing scrutiny surrounding classified information as Washington responds to ongoing military and geopolitical challenges.
The bigger national-security question
The central question now is whether investigators will identify the source of the reported disclosures.
The use of polygraph tests involving dozens of senior personnel demonstrates how seriously officials are treating the issue. But the reported results also indicate that the testing has not, so far, publicly identified a clear leaker.
The episode highlights the difficult balance between protecting sensitive military information and allowing journalists to report on matters involving national security and military readiness.
As the investigation continues, further details about the weapons leaks — and how the information reached the press — could become an important part of the wider debate over transparency, classified information and U.S. military preparedness.
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