Today is the 25th anniversary of the Chernobyl nuclear disaster in Ukraine. In our third part of a series of commemorations, two Chicagoans, film director Julian Hayda and producer Father Myron Panchuk, discuss their new documentary Block Four: Chernobyl  2011.   Also, in Syria, there are reports of 25 more protesters killed in Dara’a, bringing the total to nearly 400 nationwide during the five-week-old uprising. Yaser Tabarra, a Syrian American lawyer who writes the blog, Damascene Thoughts, returns to discuss the escalating violence in Syria.