The US President, Joe Biden, said yes to Ukraine using big missiles from the US to hit targets in Russia. This is a big change for the US. Ukraine's leader, Volodymyr Zelensky, wanted this for a long time. He wants to use the missiles to hit places outside Ukraine. Russia's leader, Vladimir Putin, said before that this would be a very bad step. He said it would mean NATO is fighting in the war. But now, the US is okay with Ukraine using these missiles to keep a small part of Russia that Ukraine took in August.

The missiles that Ukraine will get can go very far, up to 300 kilometers. This decision by the US comes after Russia said soldiers from North Korea can fight in Ukraine. Ukraine thinks that Russia and North Korea will soon try to take back the part of Russia that Ukraine holds. The US's choice also means that the UK and France can let Ukraine use their own big missiles. But the UK and France have not said anything yet.

In the past, Ukraine used long missiles from the US to hit places in the east of Ukraine. Russia has been trying to move forward there. Russia also used many drones to attack Ukraine. Just last night, Russia attacked Ukraine with many missiles and drones, killing at least 10 people. Ukraine has said for a long time that it needs more help to defend itself. Joe Biden wants to give more help to Ukraine before he leaves his job in January. But the next US President, Donald Trump, might not want to give more help. He thinks the help costs the US too much money. The US has given Ukraine a lot of weapons since the war started.