US President Donald Trump says he has sent two nuclear submarines to a new place. He did this because a Russian leader, Dmitry Medvedev, said some strong and dangerous words. Trump says he wants to keep American people safe.

Trump and Medvedev are not friendly. They say bad things about each other on the internet. Trump told Russia to stop the war in Ukraine soon, but Russia did not listen. Medvedev said Trump is making threats and playing games.

After Trump talked about the submarines, the Russian stock market went down. The Russian government did not say anything about Trump’s actions. Trump says he wants to protect his country and hopes there will be no problems.