The prime minister notices that her closest advisors never seem to disagree with her or with each other on a lot of important issues, such as arms control. she worries that she is not getting the pros and cons of different issues because her advisors are engaging in

she worries that she is not getting the pros and cons of different issues because her advisors are engaging in: Groupthink

Groupthink happens when a member of a social groups felt the pressure to have certain opinion because they do not want to become an outcast in that social group. This often make the group become close minded and secluded from the outside opinion