A surreal week in US politics, with a huge debacle counting votes at the Iowa caucus to select a Democratic presidential candidate. But was the strongest candidate even on the ballot?  Also, Trump delivers an upbeat State of the Union on the eve of the vote of his impeachment acquittal. Amidst all this drama, what do the tea leaves say about the future shape of US foreign policy? Dr Gorana Grgic joined ABC Radio's 'Between the Lines' program to discuss.