The actor flew to the island of Lesbos from Berlin in Germany, where he has been filming the latest episodes of the U.S. TV drama, and teamed up with members of the International Rescue Committee to aid those fleeing war in the Middle East.

Video footage posted on the organisation's page shows Patinkin helping a group of refugees get ashore from an inflatable boat, picking up a young girl, who appeared to be semi-conscious, and carrying her to safety.

"The idea of people coming across, doing this... journey in these tiny little boats, piled on top of each other, risking their lives... We all know many people didn't make it, but thank God so many have," he says. "(I don't understand) how people in different countries all over the world can be frightened of people who suffered so much, who are so in need, who are so desperately asking to have freedom, justice and dignity."

Patinkin then turns to the camera and gives an impassioned plea to others around the world to help the refugees.

"Just give them a welcome," he adds. "After risking their lives under these conditions, give them a good shot, help them! God Almighty, help them!"

The veteran TV star also wrote a candid article for the Washington Post about his experiences in Greece.

"After wrapping filming for the fifth season of Homeland in Berlin - living in a fictional world of chaos, violence and confusion - I went to the island of Lesbos to spend time with folks from the International Rescue Committee (IRC). I joined them there to support people... who have faced the realities of terrorism and war that I have only imagined on screen."

He goes on to urge fans in the U.S. to contact their local politicians and implore them to help ease the crisis in Europe by increasing the number of refugees the country is willing to accept.

"Our governments will continue to work to prevent more horrific attacks such as those in Beirut and Paris," he adds. "That is their job. On television, it's a job I pretend to do. But as a citizen of the world, what I can do... You can call your representatives and ask them to continue the long-held American tradition of refugee resettlement - with a specific focus right now on Syrian refugees... If you live close to an International Rescue Committee office in the United States, find out how you can assist a refugee family as they transition to American life. Invite a newly arrived family to your home for a welcoming meal... Only through loving and supporting one another, even in the face of unbearable pain and suffering, will this cycle of violence end."