The Obama Nobel Peace Prize is seen as inappropriate by many Arabs, who are angry about the surge of US troops into Afghanistan and a stagnant Israeli-Palestinian peace process.
Former President Jimmy Carter urged new focus on Israeli-Palestinian peace last week. But other accords may be more feasible.
In another nod to the West, Syria also sent an ambassador to Iraq – the first in decades.
The weekend bombing that killed at least 17 people was the worst of its kind since Syria's battle with the Muslim Brotherhood in the 1970s and 80s.