She decided to cross sectarian lines, to try to bring peace.

You can't divide this country along sectarian lines without causing new disasters.

"Political campaigning along sectarian lines is natural at this stage."

And the Iraq government has now split on sectarian lines:

In a country deeply divided along sectarian lines, that was never an easy task.

The reports threatened to further divide Iraq along sectarian lines.

Public desire to help the congregations affected has cut across sectarian lines.

I think the north has been divided along sectarian lines.

Yet the dominance of this sectarian cultural line was to prove short-lived.

By some accounts the violence has caused major shifts in the population of the area along sectarian lines.