The commercial is airing in the key swing state of Florida, targeted at Jewish voters.
Secure America Now is behind the $400,000 media buy. The group is lead by John McLaughlin, a former adviser for Netanyahu's Likud Party and former California Gov Arnold Schwarzenegger.
Scroll down to watch the commercial
Urgent: The ad uses Benjamin Netanyahu words to stress the importance of tougher action against IranThe video uses footage from a speech Netanyahu gave on September 11 about the urgency of dealing with Iran's nuclear program.
'The fact is that every day that passes, Iran gets closer and closer to to nuclear bombs...The world tells Israel wait, there's still time. And I say, "Wait for what? Wait until when?"' he says.
It is the only reference to Obama in the piece.
'The world needs American strength. Not apologies,' the ominous TV spot says.
Pals: Mitt Romney and Netanyahu have been friends since they met in Boston in the 1970sBecause Secure America Now is a 501(c)4 'social welfare organization' it is not required to disclose its financial backers.
However, Politico reports that the group plans to spend $1million running the ad in Miami, West Palm Beach and Fort Myers -- the areas with the highest percentage of Jewish voters in Florida.
Netanyahu and Romney have been friends since they met in Boston in the late 1970s and kept in touch ever since.
However, the Israeli leader has not publicly endorsed Romney.