Santos and Ban Ki-moon, former UN Secretary General, will meet with the Ukrainian president to visit areas affected "by the devastation" caused after the "illegal aggression of Russia".

"Humanity cannot ignore the moral absurdity of Russia's war against Ukraine", said Santos, who was Nobel Peace Prize winner after the signing of the peace agreement with the extinct FARC, quoted in a statement in which he assured that the visit is being made to "listen and learn".

For his part, Ban Ki-moon stressed that they want to show solidarity "with the brave Ukrainian people" and that they will offer the support of The Elders to Zelenski.

"We reaffirm the centrality of Ukrainian sovereignty, territorial integrity and its right to self-defense," the former UN secretary said.

He also called on UN members to "remember their responsibility to uphold the fundamental principles of the UN Charter, which have been so flagrantly violated by Russia's invasion".

The former Colombian president considered that "the world must do everything possible to help the people of Ukraine to live in peace, dignity and freedom, not only for all the lives that have already been lost, but for all those who continue to suffer".

According to The Elders organization both officials visited Bucha and Irpin this Tuesday to "understand the atrocities committed by Russian forces there."

"The Russian war in Ukraine is a moral outrage. The world must strongly oppose the normalization of this horror and injustice. Humanity cannot look the other way," called for this organization that was founded by the late former South African President Nelson Mandela and is made up of an independent group of global leaders.