Foreign Minister Ali Akbar Salehi departed for Turkey to attend Istanbul Conference on peace process in Afghanistan, IRNA reported.
Turkey's President Abdullah Gul will chair the meeting in which Afghanistan President Hamid Karzai is present, too.
Delegations from Pakistan, Iran, Turkmenistan, Uzbekistan, Tajikistan, China, Russia, India, Kazakhstan, Kyrgyzstan, United Arab Emirates, Saudi Arabia, Egypt, Britain, France, Germany and Australia are attending the meeting.
It is supposed that the process of giving security responsibility to 17 Afghan provinces from NATO forces be discussed at the meeting.
President Karzai is to declare the exact time for giving the second round of security responsibility to Afghan forces as well as areas in which the process will be implemented.
The first round of giving security responsibility to Afghan forces completed three months ago.
NATO has declared that all responsibilities will be given to Afghan forces until the end of 2014.