U.S. President Barack Obama called Norwegian Prime Minister Jens Stoltenberg on Saturday to offer U.S. condolences over the killing of dozens of Norwegians and pledged assistance if needed, according to Reuters. The White House said Obama wanted to express "his deepest condolences for the dozens of innocent Norwegians killed and injured in yesterday's senseless attacks in Oslo and Utoya Island." "The president offered any assistance the United States could provide to the Norwegian government in dealing with this horrible tragedy. In this incredibly difficult time, the president reaffirmed the deep and longstanding friendship between the United States and Norway," a White House statement said.