Here he is responding to a point made by Mitt Romney in the last debate between them:
... If we're going to talk about trips that we've taken - when I was a candidate for office, the first trip I took was to visit our troops. And when I went to Israel as a candidate, I didn't take donors, I didn't attend fundraisers. I went to Yad Vashem, the Holocaust museum there, to remind myself the nature of evil and why our bond with Israel will be unbreakable.
And then I went down to the border town of Sderot, which had experienced missiles raining down from Hamas. And I saw families there who showed me where missiles had come down near their children's bedrooms, and I was reminded of what that would mean if those were my kids - which is why, as President, we funded an Iron Dome program to stop those missiles. So that's how I've used my travels, when I traveled to Israel and when I traveled to the region.