BRUSSELS - Turkey is expected to formally request on Monday that advanced NATO Patriot missiles be placed on its border to defend against Syrian attacks, Western officials said.

Syrian rebels fighting President Bashar Assad have been able to take large swathes of land but are almost defenseless against Syria's air force. The rebels have called for an internationally enforced no-fly zone, a measure that helped Libyan rebels overthrow their long-term leader last year.

German Defense Minister Thomas de Maiziere said Germany expected Turkey to make the request to NATO for Patriot deployment on Monday and would study such a request "with solidarity".

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