Australian opposition leader Sussan Ley, the first woman to head the Liberal Party, is under renewed pressure after the resignation of her shadow defence minister Angus Taylor. His resignation paves the way for an expected leadership challenge. Local media say he has long been plotting to oust her. Ley narrowly defeated Taylor in a leadership contest last year, after her party's worst ever election loss. But since then she has been plagued by poor poll numbers and infighting among the