Trump 100 days: 'unpredictable' US alienates allies and disrupts global trade

For US foreign policy, Donald Trump's first 100 days in office were the weeks when decades happened. In just over three months, the US president has frayed alliances that stood since the second world war and alienated the US's closest friends, cut off aid to Ukrainians on the frontlines against Vladimir Putin, emboldened US rivals around the world, brokered and then lost a crucial ceasefire in Gaza, launched strikes on the Houthis in Yemen and seesawed on key foreign policy and economic questions to the point where the US has been termed the "unpredictable ally". The tariffs Trump has unleashed…