a gesture:
The family of Corporal Gilad Shalit, the soldier abducted in the Gaza Strip nearly two years ago, has received a letter from their son.aljazeera.net
[...]
"The letter was sent in a goodwill gesture to former President Jimmy Carter and to indicate Hamas's seriousness in its desire to reach a prisoner swap deal that will close the Shalit file and fulfil the demands of the Palestinian groups who abducted Shalit."