A gathering of radical Palestinian factions and their supporters has highlighted the Palestinian refugees' right to return to homes in present-day Israel.

The two-day meeting in Damascus concluded that Palestinians can resort to resistance - militant jargon for armed fighting - as the fastest way to achieve this return.

About 5,000 participants attended, including militant Hamas and other groups.

A final declaration Monday says no Palestinian can forgo the right to return and that legal, economic and media campaigns should be used to defend this.

The conference meant to show opposition to moderate Palestinian President Mahmoud Abbas and his negotiations with Israel. It called on the United Nations to expel Israel from its ranks.