United States President Donald Trump has dramatically escalated his trade offensive against America's closest Asian allies, imposing 25% import tariffs on all goods from Japan and South Korea - part of the latest swathe of levies placed on goods from countries around the world.
The punitive measures, announced via Truth Social on Monday, will take effect from 1 August and mark a significant departure from traditional U.S. alliance dynamics.
At least 14 countries' imports are set to face steep blanket tariffs starting 1 August, Trump revealed Monday, with rates ranging from 25% to 40% across different nations.

The decision to target Japan and South Korea - both crucial security partners in countering China's regional influence - underscores Trump's willingness to subordinate geopolitical considerations to his trade agenda.
The tariffs would presumably provide revenues that could help offset the tax cuts he signed into law on 4 July.
In the letters posted to his social media platform, Trump warned Asian leaders that retaliation would trigger an automatic escalation.
"If for any reason you decide to raise your tariffs, then, whatever the number you choose to raise them by, will be added onto the 25% that we charge," Trump wrote in the letters to Japanese Prime Minister Shigeru Ishiba and South Korean President Lee Jae-myung.
The letters Trump signed add that the U.S. will "perhaps" consider adjusting the new tariff levels, "depending on our relationship with your country".
Ripple effects
Financial markets responded negatively to the news, with the Dow closing 0.94% lower, the S&P 500 dropping 0.79% and the tech-heavy Nasdaq falling 0.92%.
Currency markets reflected the strain on bilateral relationships, with the Japanese yen, South Korean won and South African rand all weakening against the dollar as investors fled to dollar-denominated assets.
The timing of the tariffs is particularly consequential for South Korea, where freshly minted President Lee Jae-myung took office last month, warning of a 'tangled web of overlapping crises' facing his government.
The new administration now faces the challenge of managing relations with both its most important security ally and its largest trading partner.
Japan's response has been more measured, with officials reportedly exploring diplomatic channels to secure exemptions.
However, officials central to Seoul's response to China and Japan's economic pressure have subsequently taken prominent roles in Seoul's tariff response, suggesting both nations are drawing on their experience.
On the defence down under
While Australia faces relatively modest 10% baseline tariffs under Trump's regime, Canberra is preparing for potential escalation.
At one stage, Australian steel and aluminium imports to the U.S. were subject to a 50% import tax, demonstrating that even allied nations are not immune to Trump's protectionist agenda.
Prime Minister Anthony Albanese's five-point response plan, announced during the federal election campaign, includes strengthening anti-dumping measures and establishing a $1 billion Economic Resilience Program through the National Reconstruction Fund.
The Australian Government's restrained approach reflects broader economic analysis suggesting that the impact of changing trading patterns on the global price of Australian imports is ambiguous, but on balance is expected to reduce them because China accounts for a large share of imports.