Given a lack of international coordination that has beset the current coronavirus pandemic, whether such a treaty could be reached or adhered to is an open question.
Politicians in Great Britain are already studying the results of the U.S. presidential race, hoping for clues that could help them in their next parliamentary elections, due to take place in 2024.
Speaking to Parliament, the prime minister defends his decision to order a renewed lockdown, saying a new wave of infections could be "twice as bad" as anything seen before.