Iran and Saudi Arabia were already in opposing camps regarding a solution to Syria's civil war. A UN envoy is trying to keep the process on track.
A secure, stable and united Yemen anytime soon looks sadly unlikely.
The humanitarian crisis is deepening and the chances of a political solution soon seem very slim.
Houthi rebels have agreed to a five-day truce proposed by Saudi Arabia to allow aid into the country. The UN estimates that at least 300,000 Yemenis have been displaced by the fighting.
Government officials say the calls are 'unacceptable' after all the destruction caused by the Houthi rebel offensive.