battle of wills
clash of wills
test of wills

This is not the way to have a test of wills with the palace.

Hence, reviewing is felt by some to be very much a test of wills.

It was a small and very private test of wills.

The overall issue seems to come down to a test of wills.

What we are seeing is a test of strength and wills.

Instead, the conflict has turned into long-term test of wills.

It is still too early to say who won their latest test of wills.

The administration and Congress digging in for a test of wills over federal spending.

Inside the camp, many people seemed to be settling in for a test of wills.

They were having an argument, a test of wills, turning the explosives on and off.