Former presidents of Ukraine Leonid Kuchma, Viktor Yushchenko and Petro Poroshenko attend the funeral ceremony of the first president of Ukraine Leonid Kravchuk, in Kyiv, Ukraine, May 17, 2022. REUTERS/Viacheslav Ratynskyi 

Former president of Ukraine Petro Poroshenko attends the funeral ceremony of the first president of Ukraine Leonid Kravchuk, in Kyiv, Ukraine, May 17, 2022. REUTERS/Viacheslav Ratynskyi 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, burn smoke grenades during a rally outside the presidential administration headquarters in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, burn flares during a rally outside the presidential administration headquarters in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, burn smoke grenades during a rally outside the presidential administration headquarters in Kyiv, Ukraine January 19, 2022. A board displaying a photo of Ukrainian President Volodymyr Zelenskiy reads: "Zelenskiy is a dictator". REUTERS/Valentyn Ogirenko 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, hold a rally outside the presidential administration headquarters in Kyiv, Ukraine January 19, 2022. A placard displaying a photo of Ukrainian President Volodymyr Zelenskiy reads: "Dictator". REUTERS/Valentyn Ogirenko 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, walk towards the presidential administration headquarters after a court hearing in Kyiv, Ukraine January 19, 2022. A board displaying a photo of Ukrainian President Volodymyr Zelenskiy reads: "Zelenskiy is a dictator". REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gives a thumbs-up as he greets his supporters after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, walk towards the presidential administration headquarters after a court hearing in central Kyiv, Ukraine January 19, 2022. A banner reads: "Don't play with Porokh (Poroshenko)!" REUTERS/Gleb Garanich 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, walk towards the presidential administration headquarters after a court hearing in central Kyiv, Ukraine January 19, 2022. One of the banners reads: "No to political repressions". REUTERS/Gleb Garanich 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, walk towards the presidential administration headquarters after a court hearing in central Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, walk towards the presidential administration headquarters after a court hearing in central Kyiv, Ukraine January 19, 2022. A banner reads: "No to political repressions". REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, and his wife Maryna react during a meeting with supporters after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, sings the national anthem after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, sings the national anthem after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, greets his supporters outside a court building after a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses the media after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses the media after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses the media after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, reacts while addressing the media after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses the media as his wife Maryna stands behind after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, embraces his wife Maryna after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, flashes the victory sign while addressing the media after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gestures after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, adjusts a protective face mask after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses the media after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, reacts after a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, attends a court hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

A man reacts amid the crowd as law enforcement officers cordon off the area from supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, near a court building before a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gather outside a court building during a hearing in Kyiv, Ukraine January 19, 2022. A placard reads: "Country needs Porokh (Poroshenko)". REUTERS/Gleb Garanich 

Supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gather outside a court building during a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses his supporters outside a court building before a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses his supporters outside a court building before a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses his supporters outside a court building before a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Gleb Garanich 

Law enforcement officers cordon off the area as supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, attempt to set up tents near a court building before a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Law enforcement officers cordon off the area as supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gather near a court building before a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Law enforcement officers cordon off the area as supporters of Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gather near a court building before a hearing in Kyiv, Ukraine January 19, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses supporters after leaving a court building in Kyiv, Ukraine January 17, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses supporters as his wife Maryna stands nearby, after leaving a court building in Kyiv, Ukraine January 17, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses supporters after leaving a court building in Kyiv, Ukraine January 17, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, addresses supporters as his wife Maryna stands nearby, after leaving a court building in Kyiv, Ukraine January 17, 2022. REUTERS/Gleb Garanich 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, waits for his court hearing to continue, in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, attends a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gestures as he speaks during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, speaks during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gestures as he speaks during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gestures as he speaks during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gestures as he speaks during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, speaks during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko gestures as he walks to address supporters upon arrival at Zhulyany airport in Kyiv, Ukraine January 17, 2022. REUTERS/Serhii Nuzhnenko TPX IMAGES OF THE DAY 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, arrives for a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko addresses his supporters upon arrival at Zhulyany airport in Kyiv, Ukraine January 17, 2022. REUTERS/Serhii Nuzhnenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, listens to his lawyer Ilya Novikov during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, speaks during a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, and his lawyer Ilya Novikov attend a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, attends a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, attends a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, is seen before a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko 

Ukrainian former President Petro Poroshenko, who is suspected of high treason by financing pro-Russian separatists in eastern Ukraine while in office in 2014-2015, gestures before a court hearing in Kyiv, Ukraine January 17, 2022. REUTERS/Valentyn Ogirenko