The Trump administration's top intelligence officials stressed to Congress the threat they said was posed by international criminal gangs, drug cartels and human smuggling, testifying in a hearing Tuesday that unfolded against the backdrop of a security breach involving the mistaken leak of attack plans to a journalist.

Fallout continues after it was learned that top officials in the Trump administration inadvertently added The Atlantic editor Jeffrey Goldberg to an unsecured Signal group chat discussing a U.S. attack on Houthis in Yemen.