People pray and lay flowers at a monument to soldiers killed in Afghanistan in the 1979-1989 war, to mark the anniversary of the withdrawal of Soviet troops from the country, in the Ukrainian capital Kiev, Thursday, Feb. 15, 2018. The last detachment of the Soviet army left Afghanistan Feb. 15, 1989 after waging a 10-year war in a failed attempt to impose Soviet rule in the country. Some 3,360 Ukrainian soldiers were killed in the war. (AP Photo/Efrem Lukatsky)

People pray and lay flowers at a monument to soldiers killed in Afghanistan in the 1979-1989 war, to mark the anniversary of the withdrawal of Soviet troops from the country, in the Ukrainian capital Kiev, Thursday, Feb. 15, 2018. The last detachment of the Soviet army left Afghanistan Feb. 15, 1989 after waging a 10-year war in a failed attempt to impose Soviet rule in the country. Some 3,360 Ukrainian soldiers were killed in the war. (AP Photo/Efrem Lukatsky)

A man lights candles as he prays for the victims to soldiers killed in Afghanistan in the 1979-1989 war, to mark the anniversary of the withdrawal of Soviet troops from the country, in the Ukrainian capital Kiev, Thursday, Feb. 15, 2018. The last detachment of the Soviet army left Afghanistan Feb. 15, 1989 after waging a 10-year war in a failed attempt to impose Soviet rule in the country. Some 3,360 Ukrainian soldiers were killed in the war. (AP Photo/Efrem Lukatsky)

A man kneels to pray for soldiers killed in Afghanistan in the 1979-1989 war, to mark the anniversary of the withdrawal of Soviet troops from the country, in the Ukrainian capital Kiev, Thursday, Feb. 15, 2018. The last detachment of the Soviet army left Afghanistan Feb. 15, 1989 after waging a 10-year war in a failed attempt to impose Soviet rule in the country. Some 3,360 Ukrainian soldiers were killed in the war. (AP Photo/Efrem Lukatsky)

Orthodox priests cross themselves as they lay flowers at the Monument for the dead in Soviet war in Afghanistan (1979-1989) during a memorial ceremony in Kiev on February 15, 2018. Ukraine and other countries of the former Soviet Union mark the 29th anniversary of the end of the Soviet-Afghan war. / AFP PHOTO / Sergei SUPINSKY

Orthodox priests cross themselves as they lay flowers at the Monument for the dead in Soviet war in Afghanistan (1979-1989) during a memorial ceremony in Kiev on February 15, 2018. Ukraine and other countries of the former Soviet Union mark the 29th anniversary of the end of the Soviet-Afghan war. / AFP PHOTO / Sergei SUPINSKY

Veterans lay flowers at the Monument for the dead in Soviet war in Afghanistan (1979-1989) during a memorial ceremony in Kiev on February 15, 2018. Ukraine and other countries of the former Soviet Union mark the 29th anniversary of the end of the Soviet-Afghan war. / AFP PHOTO / Sergei SUPINSKY

Veterans lay flowers at the Monument for the dead in Soviet war in Afghanistan (1979-1989) during a memorial ceremony in Kiev on February 15, 2018. Ukraine and other countries of the former Soviet Union mark the 29th anniversary of the end of the Soviet-Afghan war. / AFP PHOTO / Sergei SUPINSKY

Veterans lay flowers at the Monument for the dead in Soviet war in Afghanistan (1979-1989) during a memorial ceremony in Kiev on February 15, 2018. Ukraine and other countries of the former Soviet Union mark the 29th anniversary of the end of the Soviet-Afghan war. / AFP PHOTO / Sergei SUPINSKY

A veteran lays flowers at the Monument for the dead in Soviet war in Afghanistan (1979-1989) during a memorial ceremony in Kiev on February 15, 2018. Ukraine and other countries of the former Soviet Union mark the 29th anniversary of the end of the Soviet-Afghan war. / AFP PHOTO / Sergei SUPINSKY

A veteran lays flowers at the Monument for the dead in Soviet war in Afghanistan (1979-1989) during a memorial ceremony in Kiev on February 15, 2018. Ukraine and other countries of the former Soviet Union mark the 29th anniversary of the end of the Soviet-Afghan war. / AFP PHOTO / Sergei SUPINSKY