President Barack Obama's absence from the great gathering in Paris of national leaders from other countries, to show their solidarity with France in its opposition to Islamic terrorists, was another sign of the Obama administration's continuing irresolution in the face of terror. Even the recent courageous message of Egypt's president, Abdel-Fattah el-Sisi, calling on his fellow Muslims around the world to "revolutionize" the interpretation of Islam, to make it more compatible with peaceful relations with other peoples, put no steel in the spine of Barack Obama. From his earliest days in the White House, our president has downplayed the terrorist...