When Noura al-Ameer exchanged looks with the Syrian government representatives in Switzerland, she felt as though she was looking into the eyes of her interrogators in prison. The 26-year-old anti-government activist was detained for six months in some of Syria's most notorious prisons in Damascus and Homs before her release in late 2012.

In its last-ditch attempt to get moderate Syrian opposition groups to the negotiating table, the Obama administration faces the prospect that a no-show wouldn't be such a bad thing. With less than two weeks to go before a long-planned peace conference in Switzerland, the main Western-backed moderate political group seeking to oust Syrian President Bashar Assad has still not decided if it will attend. It's the latest frustration for the U.S. and allies who have spent the last 18 months trying to negotiate a transition of power from Assad to a new, representative government.

Western nations have indicated to the Syrian opposition that peace talks next month may not lead to the removal of President Bashar al-Assad and that his Alawite minority will remain key in any transitional administration, opposition sources said.