Trump has cut off Ukraine aid, brokered and lost a ceasefire in Gaza and took a sledgehammer to world commerce

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 will, if effected, disrupt global trade and lead to supply chain shocks in the United States, with China’s Xi Jinping seeking to recruit US trade allies in the region.

The pace of the developments in the past 100 days makes them difficult to list. Operating mainly through executive action, the Trump administration has affected nearly all facets of US foreign policy: from military might to soft power, from trade to immigration, reimagining the US’s place in the world according to an isolationist America First program.