Sheikh Mohamed bin Zayed Al Nahyan, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the Emirates' Armed Forces, on Thursday, discussed in a telephone call here today with James Mattis, US Defense Secretary, friendly relations binding the two countries and co-operation between them, especially in defense domains, Emirates official news agency WAM, reported. The two sides also reviewed latest regional developments and co-ordination between them, to enhance regional security and stability, as well, in addition to exchange views on issues of mutual interest.