Apparently the Dutch think so:
The Dutch intelligence service, the AIVD, has called off an operation aimed at infiltrating and sabotaging Iran’s weapons industry due to an assessment that a US attack on the Islamic Republic’s nuclear program is imminent, according to a report in the country’s De Telegraaf newspaper on Friday.
The Dutch believe it’s coming within weeks. If I had to guess, I’d say… before the first Tuesday in November. Just a hunch.