President Trump said his national security adviser "learned a lesson" after he mistakenly opened up a secret chat of Trump officials to a reporter.

Rubio over more than a decade earned a reputation as a serious foreign policy thinker in Washington. He was a key adviser to the first Trump administration’s foreign policy in Latin America and was ...

The comments were Waltz's first on The Atlantic’s claims he added an editor to a group chat that top Trump administration officials used to discuss war plans.