ADEN/SANAA (Reuters) - A powerful tribal leader in southern Yemen has called for talks between the army and suspected militants who have seized control of a provincial capital as a political crisis in Yemen drags on. With mass protests demanding an end to President Ali Abdullah Saleh's 33-year rule still paralyzing the Arabian Peninsula state, its southern province of Abyan has been scene to violence after militants suspected of ties to al Qaeda took control of its capital Zinjibar last month. Militants, who also seized the city of Jaar several months ago, have clashed with Yemeni forces almost daily.