Top US officials weigh in on the unprecedented security leak to The Atlantic

"I don't know anything about it," President Donald Trump told reporters on Monday when asked about the apparent security breach.

Drew Hallowell via Getty Images; Andrew Harnik via Getty Images; Jim Watson/AFP via Getty Images

• The editor in chief of The Atlantic was mistakenly added to a group chat with security officials.
• Jeffrey Goldberg said he was privy to the Trump administration's planned strikes on Yemen.
• The apparent breach has drawn alarm and criticism from both Republican and Democratic lawmakers.