All seven warships will be built in Italian shipyards, with construction starting in 2018.
Turkey and Qatar launched military exercises on the peninsula involving some 250 Turkish troops and 30 armoured vehicles on Tuesday.
US President Donald Trump spent the last two days in Israel and the Palestinian Territories, where he called on Israelis and Palestinians to make compromises for peace.
The foreign ministers at the summit agreed there can be no peaceful solution to the conflict in Syria with Bashar al Assad in power.
Tension between Turkey and the Netherlands deepens as Erdogan says further actions could be taken following a suspension of high-level diplomatic ties.
Amatrice town council says the Charlie Hebdo cartoons "amount to a macabre, tactless and inconceivable insult to the victims of a natural catastrophe".
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