On the occasion of the concert of Young Naperville Singers from partner city Naperville, which was held in Nitra Synagogue on 21 July, U.S. Ambassador to Slovakia Adam Sterling visited Nitra and met with Rectors of the Slovak University of Agriculture in Nitra and Constantine the Philosopher University in Nitra - Dr. h. c. prof. Ing. Peter Bielik, PhD, and prof. RNDr. Ľubomír Zelenický, CSc.