Secretary of State John Kerry on Sunday expressed sympathy for the families of nine Turkish activists killed during violent clashes with Israeli commandos who raided a ship trying to break the security blockade of the Hamas-ruled Gaza Strip. Speaking in Istanbul, Kerry commented on a recent U.S.-mediated deal aimed at ending a diplomatic rift between Israel and Turkey, whose Islamist government is supportive of Hamas. The agreement entailed an Israeli apology for “any errors that could have led to loss of life” during the 2010 incident and a pledge to negotiate compensation. … Speaking alongside Kerry, Turkish Foreign Minister Ahmet...