Why has the Trump administration ordered staff to take polygraph tests?

What the report says

The Trump administration has ordered dozens of Pentagon personnel to take polygraph tests as part of a widening effort to identify who may have leaked classified information about U.S. weapons stockpiles, according to Al Jazeera’s reporting, which cited The New York Times and CBS News. The tests were conducted in August on roughly 50 military officers and civilian officials working with the Joint Staff, and CBS said several dozen people at the Pentagon were examined earlier in the summer as well.

The reported leak inquiry follows media coverage in July saying that some U.S. munitions inventories, including long-range missiles and Patriot interceptors, were running low while the United States was carrying out operations in the Middle East. The administration has denied those claims and said it still has large weapons reserves. Investigators are said to have asked whether officials provided classified information to journalists, with the goal of finding possible sources and discouraging future disclosures.

The Pentagon has not confirmed the details, but said it treats leaks of classified national security information seriously and investigates them. Defense Secretary Pete Hegseth has already tightened access to officials and information, and the department has expanded leak inquiries with the Justice Department and FBI. The article says the push reflects growing tension between the Pentagon and reporters, and comes amid broader concern in Washington about unauthorized disclosures of sensitive military matters.