FILE - In this June 28, 2019, file photo, President Donald Trump and Russian President Vladimir Putin walk to participate in a group photo at the G20 summit in Osaka, Japan. Russia says it will withdraw from an international treaty allowing observation flights over military facilities following the U.S. exit from the pact. Russia’s Foreign Ministry said in a statement Friday, Jan. 15, 2021 that the U.S. withdrawal from the Open Skies Treaty last year “significantly upended the balance of interests of signatory states,” adding that Moscow’s proposals to keep the treaty alive after the U.S. exit have been cold-shouldered by Washington’s allies. (AP Photo/Susan Walsh, File)

FILE - In this Dec.12, 2015, file photo, an activist holds a poster during a demonstration near the Eiffel Tower, in Paris, during the COP21, the United Nations Climate Change Conference. For America's allies and rivals alike, the chaos unfolding during Donald Trump's final days as president is the logical result of four years of global instability brought on by the man who promised to change the way the world viewed the United States. Alliances that had held for generations have frayed to a breaking point — from leaving the Paris climate accord and Iran nuclear deal to quitting the World Health Organization amid a pandemic. (AP Photo/Thibault Camus, File)