US forces hit places in Iran. This is on Friday. They hit an island. This island is for oil. US forces also hit other places. Iran says it will fight back.
This fighting is a big change. It started two weeks ago. The US says Iran stops ships. This happens in a water way. This water way is for oil.
The fighting is bad for oil. Ships cannot go through. People worry about oil. Oil costs go up. This is not good.
The US attack was big. Many places are hit. Some people have died. The world is worried. Other countries want ships to be safe. People need to stop fighting.