"U.S. to Attend Group Nuclear Talks with Iran"

"U.S. to Attend Group Nuclear Talks with Iran" by Matthew Lee is about the policy shift that the Obama Administration is making in the situation with Iran's nuclear program. In the past the U.S. refused to negotiate with Iran and compromise, which put us on a track to war. "the Bush administration had pursued a policy of isolating Iran and not attending the group's meetings with Iranian officials.", the Obama Administration is stopping that practice and making diplomatic strides to improve relations.

Clarification: What is the U.S. attending?
Application: How do you feel about this change in policy?