Update to this post.

Via Washington Examiner:

President Obama on Wednesday brushed aside complaints that Tehran would be given 24 days to respond to requests for access to disputed nuclear sites, and said basic high school physics shows that Tehran won’t be able to get away with it.

The president stressed that international inspectors would have immediate access to all known nuclear facilities. If Iran is so determined to develop a nuclear weapon that it creates a covert site, then he said the 24 days would be sufficient given the physics of nuclear activities and the trace chemicals that would be left behind.

“This is not something that you hide in the closet or you wheel off somewhere,” he said. “[I]f there is nuclear material on that site, your high school physics will remind us that that leaves a trace, so we’ll know that in fact there is a violation of the agreement.”

“This is the most vigorous inspections regime that has ever been negotiated,” he added.