Every presidential candidate should face pressure to answer, explicitly, these two questions: Given what we now know, was it right or wrong to invade Iraq in 2003 to oust Saddam Hussein and, eight years later, to help topple the regime of Muammar el-Qaddafi in Libya? Force the contenders to skip the partisan talking points and make them provide an inkling of a would-be president’s instincts about military interventions. The Iraq invasion was undertaken by the brother of the leading 2016 Republican candidate. The Libya operations were advanced by the Democratic front-runner. Today, both Iraq and Libya are dangerously dysfunctional countries where terrorism is pervasive. At the same time, the threat of the Islamic State has made war-weary Americans, at least temporarily, more receptive to American involvement. Some prospective candidates have no trouble with these questions. Senator Lindsey Graham, a South Carolina Republican who is a hard-liner on […]