Retrospectives and Spheres of Influence

Ever find that at retrospectives, the team are talking about things that happen outside of the team that affect them?

I once worked with a team, for whom, retrospective after retrospective, the problems the team wanted to highlight or talk about were how other people/teams/the organisation were causing the problems they faced. Of course, because all these problems were due to ‘external’ factors’, there appeared to be very little we could do as a team. This situation occurred time and time again turned into a vicious circle for the team.