Bangladesh´s former prime minister and key opposition leader Khaleda Zia. — Reuters/FileDHAKA: Bangladesh´s illness-plagued opposition leader Khaleda Zia made her first public appearance in six years on Thursday, months after her release from house arrest following the ouster of longtime foe Sheikh Hasina.The ferocious rivalry between the two former premiers -- born in blood and cemented in prison -- has defined politics in the Muslim-majority nation for decades.Zia was jailed in 2018 for...