Saudi Crown Prince Mohammed bin Salman's participation in the graduation ceremony of an Egyptian new military batch, side by side President Abdel Fattah Al-Sisi shows that warm relations between the two countries, Egyptian political researcher Ashraf Omara said Friday. Omara told Al-Bawaba News that such a military event attended by Al-Sisi and bin Salman is a clear message to Islamist extremists and the international Muslim Brotherhood, in particular, who launched rumors about tension erupted between Egypt and Saudi recently. The event confirmed the Egyptian-Saudi cooperation against all terrorist plots hatched against Egypt, Saudi Arabia and other Arab states.