“The attack — characterized by Vatican Secretary of State Pietro Parolin as an ‘act of senseless and diabolical violence’ — spurred a sharp rebuke from Pope Francis.
“According to Parolin, the Pope ‘prays that this pointless slaughter will awaken consciences, lead to a change of heart and inspire all parties to lay down their arms and take up the path of dialogue.’”
http://www.cnn.com/2016/03/05/middleeast/yemen-violence-nuns-elderly-killed/
“Sharp rebuke” Like a “sternly worded letter”