COURTESY BY: https://www.dawn.com/ WASHINGTON: President-elect Joe Biden has chosen Lloyd Austin, who led US troops into Baghdad in 2003 and rose to head the US Central Command, as the first African-American secretary of defence, US media reported on Monday. A veteran of conflicts in Iraq and Afghanistan, the retired four-star army general, 67, beat out the favourite for the job, former under-secretary of defence Michele Flournoy, amid pressure on Biden to nominate more minority members for positions in his cabinet. CNN, Politico and The New York Times cited unnamed sources familiar with the decision,…