Ben Stiller has visited Ukrainian refugees at the Polish border. The 56-year-old star has travelled to eastern Europe as part of his work with the United Nations High Commissioner for Refugees, and Ben has shared his experience on social media. The actor wrote on Twitter: “Just arrived in Poland, ahead of #WorldRefugeeDay with @Refugees to meet people who’s lives have been impacted by the war in #Ukraine. “At the Medyka border in Poland I met families who fled the war in Ukraine, leaving loved ones behind, with no idea when they will be able to return home. I’m so impressed w/ @refugees repres…