The attendance of the top security aide would normally be critical, but the omission was no mistake, senior U.S. officials said. Bolton, who has long advocated an expansive military presence around the world, has become a staunch internal foe of an emerging peace deal aimed at ending America's longest war, the officials said.
His opposition to the diplomatic effort in Afghanistan has irritated President Trump, these officials said, and led aides to leave the National Security Council out of sensitive discussions about the agreement.
The sidelining of Bolton has raised questions about his influence in an administration that is seeking a troop withdrawal from Afghanistan as well as an ambitious nuclear deal with North Korea and potential engagement with Iranian President Hassan Rouhani. Bolton, U.S. officials said, stands in opposition to those efforts but he does so increasingly from the periphery.