Finding the true story

I think that it is getting harder to know what is true or false.  The latest news about a massive explosion last Monday at one of Iran's top secret nuclear facilities is a case in point.  This was first reported on Friday by what has been called a right-wing Israeli news site, WND.com.  Iran denied it, but has not elaborated at all.  Israel is as quiet. 

While there has been little mention in our press, the English media has raised questions as to the veracity of the original report.  The Telegraph has some speculations:

It could be that the Iranians have deliberately leaked news of the explosion to prevent officials from the International Atomic Energy Agency from making one of their routine inspections. On the other hand the Israelis, who have never officially admitted responsibility for assassinating a number of Iranian nuclear scientists, may think it prudent to keep quiet about any involvement they might have had in the explosion for fear of provoking retaliation from Tehran.

Then, we have the story of Iran sending a monkey into space.  The view of some in the West:

Western countries are concerned the long-range ballistic technology used to propel Iranian satellites into orbit could be used to launch atomic warheads. Tehran denies such suggestions and says its nuclear work is purely peaceful.

On the other hand, Israel thinks this is just a PR ploy. What is the truth?