The Hamas group has welcomed a decision by Arab governments to send food and medicine to Palestinians in the blockaded Gaza Strip. But the Palestinian group, whose exiled leader is Syria-based, has demanded Arabs take action to break the Israeli siege of Gaza. The group also rejected the decision by Arab foreign ministers Wednesday to support Palestinian President Mahmoud Abbas, and their indirect criticism of Hamas for backing out of reconciliation talks with his rival Fatah movement. Hamas said in Thursday's statement Abbas' refusal to hold presidential elections weakens the motivation for reconciliation talks. The rivalry between Hamas and Fatah escalated after Hamas violently seized control of Gaza in June 2007.