BBC News with Sue Montgomery. The central election commission of Ukraine has confirmed that Petro Poroshenko has won the presidential election outright. Officials said he had secured 54% of the votes. David Stern reports from Kiev. _______________________________________He has promised to bring peace and unity to Ukraine, but Mr. Poroshenko's victory announcement comes on the same day government forces battled pro-Russian separatists for control of the airport in the eastern city of Donetsk. BBC reporters said the fighting was intense and helicopter gunships were used. Russia has said it will recognize the results of Ukraine's elections, but warned Kiev from using any more force against the pro-Russian insurgents in Ukraine's east. BBC新闻,苏?蒙特歌莫瑞报道. 乌克兰中央选举委员会认定彼得?波罗申科赢得了总统大选.官方表示波罗申科的得票率达到54%.大卫?斯腾,基辅报道. _________________________________________波罗申科承诺将为乌克兰带来和平与统一.但是就在宣布波罗申科赢得大选的同一天,乌政府军和亲俄分裂分子在乌东部城市顿涅茨克就该地机场的控制权展开战斗.BBC记者称战斗非常激烈,并且动用了武装直升机.俄罗斯表示认同乌克兰的选举结果,但是警告乌克兰不要再派军征讨乌东部的亲俄叛乱分子.