A New Life
Eventually, the humans on the council died of old age, and because of the strained relations between dragons and humans, no new human members could be appointed. the council now had absolutely no power over the humans.
Counter Earth Chronicles Chapter 34: Tiger On The Prowl
His actions diminish us all and strain relations between the classes." the tiger warrior walked around the floor trying to figure out what room he had seen our quarry in from the outside.
Favors of the First Ones - Chapter 28
Several races who'd had strained relations in the past began to fight aggressively over resources that bordered their systems.