WATCH: ISIS Reveals Terrifying Videos of Mass Executions & Suicide Bombings

Warning: Graphic Content

New videos posted by terror group ISIS reveal the carnage and horror that its reign has brought to regions of Iraq and Syria over the last few months.

Above you can watch a video, posted to the Internet by ISIS, which shows the mass execution of at least a dozen men, reported to be Iraqi army deserters who had hoped to flee the ISIS onslaught. The Islamic State of Iraq and Syria, also known as the Islamic State of Iraq and the Levant, expanded its brutal campaign out of its native Syria and into Iraq in May 2014.

Under the rule of the mysterious and rarely seen Abu Bakr al-Baghdadi, ISIS has used brutal tactics to take control over a large swath Iraq and Syria, including the large Iraqi city of Mosul.

Below you can watch the final moments of a young suicide bomber. The man in the video wears a scarf over his face and sits inside a vehicle beside a passenger seat loaded with what appear to be containers of explosives. The young man drives off, and in the distance a massive explosion rocks what is reported to be a holy site in Iraq.