Track and field is the most important sport for NBC so the prospect of the US team being reluctant to attend, or insisting that they could not be competitive because of disruption to preparation, means that pressure is becoming unbearable on Toyko 2020 organisers and Bach to postpone the games, despite the huge costs.
The scheme unveiled by Mr Johnson today promises around £5billion in new money - albeit for country smaller in geographic size and population. In today's money that equates to $800billion, or around £650billion.
The schemes, sometimes known as NHS top-up plans, are a form of low cost insurance policy to help meet the cost of a range of non-urgent healthcare procedures and appointments - not just at the dentist but also at the optician and for osteopathy, physiotherapy, chiropody and a visit to a chiropractor.
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