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this American life. Live from NPR News in Washington, I'm Janine Herbst. For the first time,

President Biden has given Ukraine the green light to use powerful American long-range weapons

for strikes inside Russia.

And peers Juliana Kim has more.

The Biden administration had long resisted allowing Ukraine to fire American long-range missiles into Russian territory for fear that it would only escalate fighting.

But on Sunday, a U.S. official told NPR that the Biden administration has reversed its policy and

will now allow Ukraine to use those weapons to strike in and around the Russian region of Kursk.

It's the same area where North Korea sent some 10,000 troops to help Russia last month.

The U.S. official was not authorized to speak publicly about the decision, but said

Britain will likely follow suit and allow Ukraine to use their long-range missiles at Russia.

The British needed U.S. approval because these missiles contain U.S. components.

Giuliana Kim, NPR News.

And President Biden toured Brazil's Amazon rainforest this afternoon, the first sitting U.S. president to do so.

This on his way to the G20 summit in Rio de Janeiro that starts tomorrow.

Biden pledged U.S. support to fight climate change, something the incoming Trump administration is unlikely to fund.

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