Five days after 28 victims died in the Brussels terror attacks four people remained unidentified — an agonizing delay for families waiting on news about their loved ones. Among the dead are American couple Justin and Stephanie Shults, who were confirmed killed on Saturday, and New-York based siblings Sascha and Alexander Pinczowski, who were confirmed killed on Friday. Former Belgium diplomat Andre Adam, who served as an ambassador to the United States in the 1990s, has also been confirmed dead. He was en route to the U.S. when he was killed at Brussels airport, the New York Times reported. The...