If Wednesday last week was what US president Donald Trump described as "liberation day" when he made his big announcement on tariff introductions, Wednesday this week brought tit-for-tat announcements on China and a 90-day pause for everyone else at a manageable 10% tariff on US imports from other countries. For Ireland, that means that the 20% tariff charge on exports to the US will be reduced to 10% with immediate effect and will remain for at least the next 90 days.