Obama for America, "Unbreakable"

What it says: "I went to Yad Vashem, the Holocaust museum [in Israel] to remind myself the nature of evil and why our bond with Israel will be unbreakable. As long as I'm president of the United States, Iran will not get a nuclear weapon." 

What it means: Mitt Romney and his allies have repeatedly attacked Obama as weak on Iran, arguing that the president has not stood sufficiently close to Israel against that threat. This ad pushes back on that criticism, using Obama's pledge of commitment to Israel in the foreign policy debate alongside footage from his 2008 trip to the country. 

Who will see it: Florida, where Republicans are aggressively targeting Jewish voters in hopes of peeling off some of Obama's support.