Turkey's foreign minister says Syria faces a test of goodwill over Arab League demand to allow an observer mission.

Ahmet Davutoglu says Friday Syria "must open its doors to observers."

Syria has already slammed the Arab League's ultimatum to agree by Friday to allow an observer mission into the country or face sanctions.

Davutoglu says the patience of Turkey and Arab countries is "running out over the bloodshed in Syria."

He spoke during a joint news conference with Italy's new Foreign Minister Giulio Terzi in Istanbul. Terzi described the situation in Syria as a "worrying tragedy."

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