It's nice to see how the presidential candidates are being interrogated over their view of the Iraq war. When Megyn Kelly asked Jeb Bush "If you knew then what you know now, would you have ordered the invasion of Iraq?" he was so flummoxed that he could barely give a coherent answer – and he spent the next week backtracking, giving at least four different answers.

Marco Rubio came in for some rough treatment on Fox News at the hands of Chris Wallace, who asked him the same question: Rubio refused to answer the question. Instead, he insisted that "Presidents don't have the luxury of hindsight," and that, given what he supposedly knew at the time, George W. Bush "made the right decision." The rest of the Republican candidates – with the exception of Sen. Rand Paul – are taking the Rubio line, i.e. refusing to answer the question as asked, and babbling about how "the world is a better place" without Saddam Hussein. They'd rather not talk about whether it's a better place now that ISIS and an Iranian-dominated Iraqi government have taken Saddam's place.