http://gametheory101.com/Internationa...
At the start of an international crisis, citizens usually "rally 'round the flag" to support their leaders. Principal-agent problem mean that leaders could abuse such rallies by instigating unnecessary crises to reap the benefits of the rally. The UNSC provides third-party oversight, as approval indicates that the crisis is legitimate.
For the original article, see here (gated):http://www.jstor.org/stable/4149799