Meeting agenda
"The only real solution is for everyone to live on the land as equals. In the end, everyone there will have to live together or they will all die together."Hartsie, Boston, US
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Fatah and Hamas have tried for months to agree on a national unity government, in hope of ending a boycott by the United States and the European Union and in order to present a united front towards Israel.
Washington and Brussels consider Hamas to be a terrorist group and suspended direct financial aid to the Palestinians because the movement refuses to renounce violence or recognise Israel.
However, violence has tapered off in the past couple of weeks.
Clashes last month began after Abbas called for early elections as a way of resolving the standoff with Hamas, which rejected the move.
Syria hosts the exiled leadership of a number of Palestinian groups and could exert considerable influence over Hamas. Meshaal moved to Syria from Jordan after an Israeli assassination attempt in 1997.