Hamas security forces opened fire Monday at a rally by the rival Fatah movement commemorating Palestinian leader Yasser Arafat. Six people were killed in the bloodiest day of intra-Palestinian fighting since Hamas seized control of the Gaza Strip in June.

Lebanon’s Hizbollah on Sunday called on incumbent President Emile Lahoud to take action if rival political leaders are unable to agree on a consensus president in next week’s election.

Secretary of State Condoleezza Rice said Sunday it was likely that Syria would be invited to an upcoming Middle East peace conference in the United States.