The Yen is the money in Japan. The Yen has low value now. It is very weak. This is bad for Japan. Things cost more money now.
USA and Japan work together. They buy Yen now. They sell Dollar and Euro. This makes the Yen strong. Donald Trump is the leader of USA. He calls it a sign of friendship.
This help is very rare. The last time was in 2011. There was an earthquake in Japan. Experts want to protect the world. A weak Yen hurts many countries.
Japan uses much money now. The money comes from USA too. Japan borrows money there. Leaders talk a lot. They want to help the Yen again.
