BBC News:- Tighter restrictions have come into force in the Netherlands, amid record Covid cases and concerns over the new Omicron variant. For at least the next three weeks, hospitality and cultural venues such as cafes, museums, and cinemas must close by 17:00 local time (16:00 GMT). The authorities consider the measures critical to protect the country's hospitals from becoming overwhelmed. Meanwhile, some 61 people are currently being tested for the new variant. They all have recently arrived on two KLM flights from South Africa, where Omicron was detected earlier this month. The passengers tested positive for Covid-19 and have