1) You have promised to defeat the Islamic State without “miring our troops in another misguided ground war.” And yet the U.S. and its allies have failed to win significant territory in Iraq or Syria with this approach since the summer of 2014. There are now 3,500 U.S. special operations forces in Iraq. Is that number too large or too small? Would you send more?

2) Early reports say that at least one of the attackers Friday was a recent migrant from Syria. President Barack Obama has proposed increasing the numbers of Syrian refugees the U.S. will admit in the coming years, up by perhaps 10,000 by 2017. Would you be comfortable as president with allowing this many Syrians into the country, and how do you propose screening these migrants to prevent terrorists from coming into the U.S. as well?

3) You have said that you urged Obama in 2012 to more actively work with moderate rebels in Syria, and that the failure to do so led to the rise of the Islamic State. Obama has said that these forces never had much of a chance to stop the civil war in that country. Do you agree with him in retrospect? Or do you think an earlier intervention would have made more of a difference?