French President Emmanuel Macron attends the Paris Peace Forum at The Elysee Palace in Paris, Thursday, Nov. 12, 2020. (Ludovic Marin, Pool via AP)

This handout photo taken in Oct. 2020 and provided by Pfizer shows part of a "freezer farm," a football field-sized facility for storing finished COVID-19 vaccines, in Puurs, Belgium. Pfizer's experimental vaccine requires ultra-cold storage and are being stored in special freezers until approval and distribution. Pfizer Inc. said Monday, Nov. 9, 2020 that its COVID-19 vaccine may be a remarkable 90% effective, based on early and incomplete test results that nevertheless brought a big burst of optimism to a world desperate for the means to finally bring the catastrophic outbreak under control. (Pfizer via AP)

French President Emmanuel Macron, second left, European Council President Charles Michel, center, Senegal's President Macky Sall, left, and International Monetary Fund Managing Director Kristalina Georgieva listen to listen to European Commission President Ursula von der Leyen, on a screen, during The Paris Peace Forum at The Elysee Palace in Paris, Thursday, Nov. 12, 2020. (Ludovic Marin, Pool via AP)

French President Emmanuel Macron, second right, European Council President Charles Michel, right, Senegal's President Macky Sall, second left, and International Monetary Fund Managing Director Kristalina Georgieva attend The Paris Peace Forum at The Elysee Palace in Paris, Thursday, Nov. 12, 2020. (Ludovic Marin, Pool via AP)