The United States and other western nations are pressuring Syria not to negatively influence upcoming peace talks between the Israelis and Palestinians, Israel Radio reported on Saturday, citing a report from London-based Arabic language daily Al-Quds Al-Arabi.The western powers also implored Damascus to prevent Syria-based Palestinian factions inimical to the peace negotiations, mainly Hamas and the Islamic Jihad, from sabotaging the talks.According to the report, Syria told the western nations in response to their requests that Damascus will not interfere in the activities of the Palestinian factions that stay within its borders.