Qatari Emir Sheikh Hamad bin Khalifa Al Thani met here today President of the Republic of Djibouti Ismail Omar Guelleh, currently visiting the country to take part in the UN Climate Change Conference (COP18). During the meeting, they discussed the existing relations between the two countries and ways of enhancing them, in addition to a number of issues of common interest. The Qatari Emir also met this morning the visiting UN Secretary-General Ban Ki-moon, who is also participating in the UN Climate Change Conference (COP18). During the meeting, they discussed aspects of cooperation between Qatar and the UN, in addition to several regional and international issues. The most important topics on the agenda of the COP18 conference were also reviewed during the meeting, according to a report of Qatar News Agency "QNA."