Is there some problem with this usage of '
between':
http://fox8.com/2013/03/11/south-korea-and-u-s-begin-joint-military-exercises "A new joint military exercise
between South Korea and the United States began Monday amid heightened tension across the region."
I accept 'a meeting
between X and Y' and 'a discussion
between X and Y', because a meeting or a discussion always involves a minimum of two parties. But a military exercise does not require more than one party. So, is the example slightly wrong?