PM calls on Syria ceasefire renewal

Prime Minister Malcolm Turnbull has called on all countries to work to reinstate the Syria ceasefire.

Syria's military has declared the national week-long ceasefire over amid plans to continue fighting.

"From Australia's point of view we call on all parties to reinstate the ceasefire and ensure that we work together to achieve a resolution," Mr Turnbull told reporters in New York on the sidelines of the United Nations' summit on refugees.