Israeli President Shimon Peres expressed doubts on Monday evening over the Russian proposal of placing the Syria's chemical weapons under international supervision to avoid a possible U.S.-led strike on the civil-war torn country.

The proposal is problematic since the Syrian government "can't be trusted," Peres said at an event celebrating the fiftieth anniversary of the establishment of the Israeli Press Council.

"The Syrians have shown that they are not trustworthy and that we cannot count on their integrity," Peres was quoted in a statement released by the Isreali president's office.

As the world awaits the White House's decision on military operation against Syria following the alledged chemical attack, Israel is on alert, fearing a U.S. strike may trigger retaliation by Syria and Lebanon against it.

Israeli Prime Minister Benjamin Netanyahu has canceled a trip to Italy scheduled next week, amid the mounting tensions around a possible U.S. strike, said a spokesperson of the prime minister's office.

Netanyahu was set to meet the Italian prime minister and U.S. secretary of state who is currently touring Europe.