And at what point did their interests clash?

Bligh and MacArthur's interests clashed in a number of ways.

After all, those nations' long-term interests clashed with Germany's to a far greater extent than Britain's did.

However, China's economic interests have clashed with those of India.

The Coliseum is a quagmire in part because the state and city share authority over it, and their interests sometimes clash.

Scrutiny subsided, and competing political interests clashed with the needs of children in the system.

In each local they were a minority, competing with members from other industries whose interests often clashed with theirs.

As public and private interests no longer clash, the European Commission is faced with conflicting demands.

Russia is and will be a great power, and its interests will inevitably clash with those of other global players.

What a situation for, say, a group of people who hate each other, or whose interests clash!