Peace process

In this photo provided by the U.N. in Papua New Guinea, members of the Bougainville Women's Federation cheer after results were announced in an independence referendum, Wednesday, Dec. 11, 2019, in Buka, Papua New Guinea. The South Pacific region of Bougainville voted overwhelmingly to become the world's newest nation by gaining independence from Papua New Guinea. (Serahphina Aupong/U.N. in PNG via AP)

FILE - In this Nov. 29, 2019, file photo, the Upe members vote at a men-only voting booth in the Bougainville referendum in Teau, Bougainville, Papua New Guinea. The South Pacific region of Bougainville has voted for independence from Papua New Guinea. The referendum is nonbinding, and independence would need to be negotiated between leaders from Bougainville and Papua New Guinea. (Jeremy Miller, Bougainville Referendum Commission via AP, File)

Former Afghan President Hamid Karzai speaks during an interview with The Associated Press, in Kabul, Afghanistan, Tuesday, Dec. 10, 2019. Karzai, whose final years in power were characterized by a cantankerous relationship with the United States, said on Tuesday that Washington used blackmail and corruption to manipulate his officials, undermine his government and foment violence among the country's many factions. (AP Photo/Altaf Qadri)

Ukraine's President Volodymyr Zelenskiy, left, German Chancellor Angela Merkel, French President Emmanuel Macron, third left and Russian President Vladimir Putin, right, attend a joint news conference at the Elysee Palace in Paris, Monday Dec. 9, 2019. Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskiy met for the first time Monday at a summit in Paris to try to end five years of war between Ukrainian troops and Russian-backed separatists. (Charles Platiau/Pool via AP)

Ukraine's President Volodymyr Zelenskiy, left, German Chancellor Angela Merkel, French President Emmanuel Macron, third left and Russian President Vladimir Putin, right, attend a joint news conference at the Elysee Palace in Paris, Monday Dec. 9, 2019. Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskiy met for the first time Monday at a summit in Paris to try to end five years of war between Ukrainian troops and Russian-backed separatists. (Charles Platiau/Pool via AP)

Ukraine's President Volodymyr Zelenskiy, left, German Chancellor Angela Merkel, French President Emmanuel Macron, third left and Russian President Vladimir Putin, right, attend a joint news conference at the Elysee Palace in Paris, Monday Dec. 9, 2019. Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskiy met for the first time Monday at a summit in Paris to try to end five years of war between Ukrainian troops and Russian-backed separatists. (Charles Platiau/Pool via AP)

French President Emmanuel Macron, center, Russian President Vladimir Putin, right, and Ukrainian President Volodymyr Zelenskiy, left, sit before a working session with German Chancellor Angela Merkel at the Elysee Palace Monday, Dec. 9, 2019 in Paris. Russian President Vladimir Putin and Ukraine's president are meeting for the first time at a summit in Paris to find a way to end the five years of fighting in eastern Ukraine. (AP Photo/Thibault Camus, Pool)

French President Emmanuel Macron, center, Russian President Vladimir Putin, right, and Ukrainian President Volodymyr Zelenskiy, left, sit before a working session with German Chancellor Angela Merkel at the Elysee Palace Monday, Dec. 9, 2019 in Paris. Russian President Vladimir Putin and Ukraine's president are meeting for the first time at a summit in Paris to find a way to end the five years of fighting in eastern Ukraine. (AP Photo/Thibault Camus, Pool)

French President Emmanuel Macron, center, Russian President Vladimir Putin, right, and Ukrainian President Volodymyr Zelenskiy, left, sit before a working session with German Chancellor Angela Merkel at the Elysee Palace Monday, Dec. 9, 2019 in Paris. Russian President Vladimir Putin and Ukraine's president are meeting for the first time at a summit in Paris to find a way to end the five years of fighting in eastern Ukraine. (AP Photo/Thibault Camus, Pool)

French President Emmanuel Macron, center, Russian President Vladimir Putin, right, and Ukrainian President Volodymyr Zelenskiy, left, sit before a working session with German Chancellor Angela Merkel at the Elysee Palace Monday, Dec. 9, 2019 in Paris. Russian President Vladimir Putin and Ukraine's president are meeting for the first time at a summit in Paris to find a way to end the five years of fighting in eastern Ukraine. (AP Photo/Thibault Camus, Pool)