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military carried out air strikes against Iran-backed forces in retaliation for an attack that killed an American contractor and wounded five U.S. OTTAWA, March 24 (Reuters) - U.S.
President Joe Biden on Friday said the United States is prepared to "act forcefully" to protect Americans, commenting after the U.S.

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.

BRUSSELS, March 20 (Reuters) - European Union member states have reached an agreement on the joint procurement of ammunition for Ukraine, German Defence Minister Boris Pistorius said on the sidelines of a meeting with his EU counterparts in Brussels on Monday.

Novak Djokovic said he had no regrets about missing tournaments at Indian Wells and Miami due to his Covid-19 vaccination status but hoped that he would be allowed into the United States later this year for the US Open.

"Today, we will sign the respective documents," he told reporters, adding Germany would also open its national framework contracts with the defense industry to other partners as speed was of the essence in supplying Kyiv.

"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.

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.

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. The program would help run the algorithm across quantum and classical computers depending on which system is most efficient in solving the problem.

Alternatively supporters can buy a nameless home jersey for £60. And images from the  on Saturday show that fans can still buy the new strips with the Argentina international's name and No 7 on the back for £76.95.

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).

"Make no mistake: the United States does not ... (Reporting by Andrea Shalal; writing by Jasper Ward; editing by Tim Ahmann) seek conflict with Iran, but be prepared for us to act forcefully to protect our people," Biden told reporters during an official visit to Canada.

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.

"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".