Patients of an orphanage for mentally ill children watch as the Rathmines and Rathgar musical society from Dublin, Ireland, perform for them, near the Belarussian village of Vesnova, 190 km (118 miles) southeast of Minsk, April 8, 2011. The visit and concert in the orphanage were organised by Ireland's Chernobyl Children's Project International. Belarus, Ukraine and Russia will mark the 25th anniversary of the nuclear reactor explosion in Chernobyl, the place where the world's worst civil nuclear accident took place, on April 26. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY)