Sixty-three percent of Americans say that if diplomacy fails to solve the Iranian nuclear crisis, they would approve of an Israeli strike on Iran's nuclear sites, a new poll has found. The poll, conducted by Public Opinion Strategies and Greenberg Quinlan Rosner Research and commissioned by The Israel Project, also finds that 87% of US voters feel that a nuclear-armed Iran would pose a threat to the US. Meanwhile, 80% of Americans said it was likely Iran would use nuclear weapons if it acquired them. The threat of Iran is apparently felt across the political spectrum, with 85% of Democrats and 97% of Republicans believing the Islamic Republic represents a serious threat to the US. However, 62% of those polled also felt that it was still possible to find a diplomatic solution to the crisis. The approval rate for American military action against Iran was lower than that of an Israeli operation, with 55% supporting targeted strikes by the US and its allies. Negative feelings towards Iran are also held by a significant amount of the populations of Germany and the UK, the poll finds, with 64% and 39% viewing Iran unfavorably in the two countries, respectively. "Americans, the British and the Germans worry about the direct threat to Israel from Iran and fear Iran's potential to share nuclear technology with terrorist groups," said Stan Greenberg of Greenberg Quinlan Rosner Research. "All countries want diplomacy over military action to address this threat. The Germans oppose military action for historical and cultural reasons and the British do not want another Iraq. Yet the Americans are more open to military action, especially if a diplomatic solution fails to become a reality." The national survey of 800 US likely voters was conducted by telephone July 23-27, 2008. The national omnibus surveys of 1,001 German adults and 229 opinion elites and 995 UK adults and 158 opinion elites were conducted July 18-22, 2008. The margin of error for the US poll is +/- 3.5%; the margin of error for the UK and German polls is +/- 3%.