It's Russia's Novosti, so I don't know how seriously I would take this:
The United States will be ready to launch a missile attack on Iran's nuclear facilities as soon as early this month, perhaps "from 4 a.m. until 4 p.m. on April 6," according to reports in the Russian media on Saturday.
According to Russian intelligence sources, the reports said, the US has devised a plan to attack several targets in Iran, and an assault could be carried out by launching missiles from fighter jets and warships stationed in the Persian Gulf.
Russian news agency RIA Novosti quoted a security official as saying, "Russian intelligence has information that the US Armed Forces stationed in the Persian Gulf have nearly completed preparations for a missile strike against Iranian territory."
Of course, situations like Iran's ongoing hostage-holding spawn such reports. There are likely to be more, until either Iran releases the British hostages, or a strike is launched.