Syrian opposition leaders say they plan to attend a conference this week in Rome. They want to see what the new U.S. Secretary of State John Kerry has to offer to help them bring an end of President Bashar al-Assad's regime. The opposition leaders had been threatening to boycott the meeting, but Kerry is promising he won't leave them dangling in the wind. NPR's Michele Kelemen is traveling with Kerry this week on his first trip overseas as secretary of state. She filed this report from Berlin.