ZAMBOANGA, (AFP) - Suspected rebels shot dead three soldiers and five rubber plantation workers Sunday in the latest bout of violence that has killed dozens in the southern Philippines in days. The week's killings have put extreme pressure on President Benigno Aquino to review the faltering peace process with the Moro Islamic Liberation Front (MILF), with some leading lawmakers calling for an all-out war. MILF guerrillas ambushed the troops while they were on their way to facilitate the surrender of two militants in a remote area on Mindanao island, army spokesman Major Harold Cabunoc said.