I didn't understand what leaving them without a leader would mean.

I was rather thinking of doing it alone, without a leader.

They didn't know how to act on their own, to make decisions for themselves without a leader.

And, the technology allows groups to do so without a central leader.

Without a single leader, they couldn't hope to accomplish anything.

Without a leader it would come to nothing and be forgotten.

In fact, the district has gone almost two years without a permanent leader.

Then he would run straight at the others: Without their leader, they might not hang together.

In a sense, the Indians did better without recognized leaders.

For two years, the band played without their leader, but they didn't write any new songs.