sharma oli has been in power since his nepal communist party won he led an alliance with former maoist rebels. the power sharing agreement has become an obstacle. the political upheaval comes as the country battles the coronavirus, and as it has middle of geopolitical battleshe between traditional partner india, and china. for more national and international news visit pbs.org/newshour. re >>ivasan: one month from today, president-elect joe biden wil be sworn in as the couns trth president. and while every new president faces challengeshen they enter the office, his inauguration comemis at a time of sly unprecedented challenges. for a look at hec president- biden's hurdles compare with his predecessors, we turn greenfield for an assessment. >> when it comes to a tough beginning, abraham lincoln wins the gold medal. by the time he came into office-- after sneaking io washington to avoid an assassination plot-- seven southern states had alrdy seceded. within a month, fort sumter had fallen and the civil war s on n earnest, a war that haunted lincoln throughout his presidency. just five d