Secretary of State Hillary Clinton’s announcement that Iran would be invited to a summit on Afghanistan has been greeted as a possible icebreaker in the tense relationship between Washington and Tehran. Iran is weighing whether to accept the invitation, its foreign minister said Friday, and will deliver its response next month. The overture should be consistent with the new Washington ethos: seeking Iran’s cooperation on stabilizing Afghanistan — a goal both sides desire — can help end the nuclear standoff between the two countries
