WASHINGTON Feb 8 (INP) Chairman PPP Bilawal Bhutto Zardari has said that at a time when violent extremism had become the single largest challenge to the world, genuine democracy alone offered the hope to fight the menace. Moderation vs extremism has become a major fault line in the battle of ideas and Pakistan was in the trenches in this battle of ideas, he said, He said this while addressing as a special guest of honour invited to speak to a galaxy of international guests including US Congressmen, government officials, decision makers, corporate CEOs, Ambassadors, faith leaders, media, academia and civil society organizations in Washington on Wednesday. INP/AH