The first terrorist attack since 2005 targeted Jakarta's Ritz Carlton and JW Marriott Hotels.
Splinter factions of Jemaah Islamiyah 'might now seek to re-energize the movement through violent attacks,' according to a report issued only 24 hours before Friday's bombings.
A reporter remembers when the last round of terror attacks began in Jakarta. Is another round coming?
The post-Khmer Rouge nation is a portrait of tolerance for Muslims, but the US worries that this could change.
Yet the Al Qaeda organization remains the "most clear and present danger to US security," Director Michael Hayden said in a speech Thursday.
Thousands gathered in support. But overall the group behind the 2002 attacks, Jemaah Islamiyah, poses a diminished threat today.