US President-elect Joe Biden has unveiled officials for six important posts, as he prepares to take office confirming that "America is back" and ready to lead the world. Mr Biden has chosen Jake Sullivan, Linda Thomas-Greenfield and Antony Blinken for key roles and if confirmed, Avril Haines will be the first female director of national intelligence and Alejandro Mayorkas the first Latino homeland security boss. Other nominees include Antony Blinken, Secretary of state. Mr Blinken assured that the US would soon "with equal measures of humility and confidence" restore its relationships...