In order for a team to work well together, leadership must be transparent. Leaders need to keep the entire team on the same page; have them collaborate; back each other and move in unison towards mutually agreed-upon goals. Transparent leadership where vision, mission and decisions are clearly communicated and supported with valid facts and arguments is a must for all teams which aim to realize their full potential.
Include people in the decision making process, collaborate and once a decision is made, make it clear to everyone on your team.