Please write to your local congressmen and congresswomen to to put pressure on the Sri Lankan Govenment to allow international aid to be sent to the tamil and muslim areas.
"But an official of an international aid agency reported today that Sinhalese mobs were blocking relief trucks from reaching the frontier, diverting the supplies to their own hard-hit communities.
At least four trucks were stopped by a low-ranking government official from crossing into the Tamil zone, said the official."
http://news.scotsman.com/latest.cfm?id=3938318