Left to right, second row; former Ukraine's Presidents Petro Poroshenko, Viktor Yushchenko, Leonid Kuchma and Leonid Kravchuk sing the national anthem during the opening ceremony of the newly elected Ukrainian parliament in Kyiv, Ukraine, Thursday, Aug. 29, 2019. Parliament in Ukraine has opened for its first session since an election last month. (AP Photo/Efrem Lukatsky)