A trove of leaked Pentagon documents has revealed that the U.S. Central Intelligence Agency (CIA) has intercepted South Korean government communications regarding Seoul’s aid to Ukraine.

The New York Times reported that according to the leaked documents, the CIA intercepted electronic communications about South Korea’s internal debates about whether to give the U.S. artillery shells for use in Ukraine. Seoul has been unwilling to provide direct lethal aid to Kyiv due to its Foreign Trade Act, which states its exports can only be used for “peaceful purposes” and “shall not affect international peace, safety maintenance and national security.” Another section of the leaked documents reports that ROK officials were concerned that U.S. President Joe Biden would pressure President Yoon Suk-yeol to deliver lethal aid.