The 2017 European Heart Rhythm Association (EHRA) White Book was published with cardiac implantable electronic device (CIED) and interventional electrophysiology data on European Society of Cardiology (ESC) member countries . Lebanon, an ESC member country, did not have data . Hence, there was an unmet need to have CIED and interventional electrophysiology data from Lebanon. The last data reported from Lebanon were from 2010 and 2013 [2,3]. This issue will address this gap and include data on CIED and cardiac ablation from Lebanon as well as epidemiology from atrial fibrillation enrolled in a single center registry. This issue includes original manuscripts with collaboration with the University of Pittsburgh Medical Center (Pittsburgh, Pennsylvania - USA) as well as the University of California San Francisco Medical Center (San Francisco, California - USA). It also includes a review on the association of diabetes, atrial fibrillation and ventricular arrhythmias.