WARSAW - The NATO summit kicked off here Friday afternoon, with Polish President Andrzej Duda and NATO Secretary General Jens Stoltenberg officially greeting participants at the National Stadium PGE.
A total of 61 delegations, including 18 presidents and 21 prime ministers are taking part in the event which is to take some decisions on security strengthening, especially in the alliance's eastern flank. The participants are also scheduled to discuss the Middle East, Afghanistan, the Islamic State and other issues related to NATO security.
Following the welcome ceremony, there will be a first round of discussions and a press conference in which Stoltenberg will present the decisions taken so far, especially concerning the placement of NATO military forces in its eastern flank.

Around 6,000 police officers are ensuring the security of more than 2,000 delegates. Around 160 million zloty (about 40 million U. S. dollars) were set aside in Warsaw's budget to cover the costs of the summit. (Xinhua)