A historic meeting will open tomorrow in Geneva, Switzerland, when the permanent members of the UN Security Council – the US, France, Britain, China and Russia -- plus Germany, sit down for talks with Iran about its nuclear program. The meeting marks the first time the United States and Iran have engaged in direct negotiations in thirty years. But Iran has said it wants to discuss trade, not nuclear power. With recent revelations about a second Iranian nuclear facility, and missile test firings in recent days, what signals is Iran sending? Will the US push for tougher sanctions against the regime? What can diplomatic efforts yield if Iran refuses to make concessions? Is a military strike by Israel a possibility?