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March 23 (Reuters) - The United States and Canada have reached a deal that would allow for the closure of an unofficial border crossing between New York state and the province of Quebec, but the final details still need to be worked out, a Canadian government source familiar with the talks told Reuters.

TAIPEI, March 21 (Reuters) - Taiwan President Tsai Ing-wen will transit the United States to and from a visit to Central America on a trip starting at the end of this month, the presidential office said on Tuesday.

"It is for us today to push our governments, our institutions, our people to move towards a federation because we believe that only the federation can be the global and definitive solution for Africa," said Souleymane Diouf Diallo, spokesperson for the group, calling itself "The walkers for African unity".

While quantum computers could potentially speed up some calculations millions of times faster than the fastest supercomputer, it is still uncertain when that would happen. And even when they become good enough to be useful, they would have to be paired with powerful digital computers to operate, said Sivan.

The International Olympic Committee (IOC) sanctioned Russia and Belarus after Moscow's invasion of Ukraine in February 2022 but is now reluctant to exclude their athletes from the Olympics entirely for fear of a return to the boycotts of the Cold War era.

March 23 (Reuters) - The United States has designated one former and two current Paraguayan officials for what Washington said was their involvement in "significant corruption," making the officials and their families ineligible for entry into the North American country.

Holding the flags of both countries and the African Union, the group of about a dozen men and women walked in single file last week on the side of a road near Hounde, in western Burkina Faso, as they neared the finish line of a trek of more than 860 km (535 miles).

HOUNDE, Burkina Faso, March 21 (Reuters) - A small group of activists have been walking from Mali's capital Bamako to Burkina Faso's capital Ouagadougou to express their support for a federation between the two West African states.

March 21 (Reuters) - Nvidia Corp, the computing company powering the bulk of artificial intelligence, is positioning itself as a key player in quantum computing with the launch of new software and hardware.

The U.S.
action targets former director of the Paraguayan Civil Aviation Authority, Edgar Melgarejo, current member of the Paraguayan Panel for the Discipline of Judges and Prosecutors, Jorge Bogarin, and current Court Clerk Vicente Ferreira, State Department spokesperson Vedant Patel said in a statement.

"We strongly believe that now is not the time to consider the opening up of a pathway for Russian and Belarusian athletes to return to the Olympic Games in any status," the Polish foreign ministry said in a statement issued jointly with Britain, Latvia, Lithuania and Estonia.

"While the IOC has made no final decisions yet, we strongly urge it to reconsider its plans and return to the original well-proven stance supported by the international community," the Polish statement said.

The program would help run the algorithm across quantum and classical computers depending on which system is most efficient in solving the problem. On Tuesday at its developer conference GTC, Nvidia unveiled CUDA Quantum, a platform for building quantum algorithms using popular classical computer coding languages C++ and python.

"CUDA Quantum will do the same for quantum computing, enabling domain scientists to seamlessly integrate quantum into their applications and gain access to a new disruptive computing technology," said Tim Costa, Nvidia's director of HPC and quantum.

WARSAW, March 27 (Reuters) - Russian and Belarusian athletes should be banned from the 2024 Olympics in Paris unless Moscow pulls its forces out of Ukraine, according to Poland, Britain and the Baltic states, despite the IOC saying it plans to let them compete as neutrals.