As U.S. President Joe Biden leaves Warsaw, Poland, he calls Russias suspension of the last remaining U.S.-Russia nuclear arms control treaty a "big mistake."
Russian President Vladimir Putin holds talks with Chinas top diplomat Wang Yi, saying China can play an important part in easing the "international situation."
South Korea, the United States and Japan hold joint missile defense exercises off South Koreas eastern coast.
And a Russian warship armed with new hypersonic missiles arrives in Richards Bay, South Africa, for joint exercises that will also include China.
Originally published at - https://learningenglish.voanews.com/a/6974587.html
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