Palestinian president Mahmoud Abbas (L) inspects honor guard with Serbian counterpart Tomislav Nikolic (R) upon his arrival to the West Bank city of Ramallah on May 1, 2013. (Xinhua/Fadi Arouri)

Serbian president Tomislav Nikolic (L) and Palestinian counterpart Mahmoud Abbas attend a joint press conference upon Nikolic arrival to the West Bank city of Ramallah on May 1, 2013. (Xinhua/Fadi Arouri)