sentences:  Meanwhile, Mongul (who had since obtained a yellow ring in the aftermath of the war) begins his quest to take command of the Sinestro Corps in their namesake's absence.After obtaining an additional five rings by killing corpsmen who refused to follow him, Mongul takes over the planet Daxam and then a large contingent of the Sinestro Corps, after besting Arkillo in one-on-one combat, he becomes the new leader of the Sinestro Corps.In "Rage of the Red Lanterns" #1, a group of rogue Sinestro Corps members still loyal to Sinestro release him from Green Lantern custody as he is being transferred for execution.