Faced with street protests calling for him to resign amid a rising tide of public discontent, Malaysian Prime Minister Anwar Ibrahim has challenged the opposition camp to present a no-confidence vote against him.More than 20,000 protesters marched through Kuala Lumpur on Saturday, demanding Anwar’s resignation in an opposition-led rally, the first he has faced since becoming prime minister.The opposition has accused him of failing to deliver on election promises and mismanaging the...