The incident with Pratt is far from the first time that Trump shared classified information with people unauthorized to hear it. In May 2017, Trump shared highly classified information with the Russian foreign minister and the Russian ambassador to the United States that the U.S. hasn’t shared with some of its closest allies. Current and former U.S. officials warned that Trump had jeopardized a crucial intelligence source on the Islamic State group.
Later that month, Trump told then-Philippine President Rodrigo Duterte that the U.S. had positioned two nuclear submarines off the Korean peninsula. The locations of nuclear subs are meant to be kept secret, as a matter of national security. In fact, only the captains and crews know the sub’s exact location.
Then, in July 2017, CNN reported that the U.S. was forced to extract a spy embedded in the Russian government after concerns that Trump had shared classified information that could have exposed them.