Summary: Manila, Philippines (CNN)Philippine President Rodrigo Duterte's vitriol against the United States took another caustic turn Tuesday, when he threatened to "break up" with the US and said President Barack Obama can "go to hell." Duterte's latest remarks came just as the US and Philippines started joint military exercises -- perhaps for the last time. The war drills began Tuesday in Manila and will last until October 12. Last week, Duterte said this round of joint drills with the US would be the last. "I serve notice to you now that this will be the last joint military exercise with US," Duterte said. 'I will break up with America'
