The Hollywood actor is a goodwill ambassador for the UN body.

"I am here to learn, to learn, to share stories that show the human impact of war, and to strengthen calls for solidarity."

According to the UN High Commissioner for Refugees (UNHCR), UNHCR Ben Stiller has visited Poland and Ukraine to highlight the needs of those who have fled the war.

The Hollywood actor is a goodwill ambassador for the United Nations.

Previous celebrities who have traveled to Ukraine include Angelina Jolie, who is also a goodwill ambassador and visited Lviv in April.