"If Syria is honest and will take real steps to remove and destroy the chemical weapons in its territory, the US will not attack," Peres said in a statement.
But "if there will be a crack in Syria's integrity I have no doubt that the US will act militarily," he warned.
Yesterday, US President Barack Obama postponed his threat to strike Syria, after President Bashar al-Assad's regime welcomed a Russian proposal to gather and destroy its chemical arsenal.