After launching the FireFly probes in 2015, the company seeks to launch a larger craft, named DragonFly, in 2016 which will be able to return between 30 to 60 kgs ofmaterial to Earth.
Note that the real return since 1926 is almost 1% per year higher, a fairly material difference in terms of returns, and yet the nominal return was almost identical (9.9% annually since 1926 versus only a slightly lower 9.7% since 1957).
The U.S. and its allies are seeking to gain Iran's willingness to suspend its production of near weapons-grade nuclear material at its uranium-enrichment sites in return for economic incentives.