3月25日，波兰总理希德沃在意大利罗马参加欧盟特别峰会。 新华社记者金宇摄

Polish Prime Minister Beata Szydlo signs the "Declaration of Rome" during a ceremony at Capitoline Hill in Rome, Italy, on March 25, 2017. European Union (EU) leaders on Saturday marked the 60th anniversary of the Treaty of Rome founding the integration process, with a major ceremony in the Italian capital. (Xinhua/Jin Yu)