Sheikh Mohamed bin Zayed Al Nahyan, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the UAE Armed Forces, discussed today in a telephone call with James Mattis, US Defense Secretary, the friendly relations and co-operation between the two countries, especially in the military and defense fields. The two sides also reviewed current regional developments and co-ordination between the two countries to enhance regional security and stability. They also exchanged views on topics of mutual interest.