The United Kingdom has closed its embassy in Iran. This is for now. There are big problems in Iran. The ambassador and staff have gone. They will work from a different place. This happened on Wednesday. It means Iran is not safe.
The UK looked at the safety. Iran has large protests. These are the worst protests. US President Donald Trump spoke to protesters. He said help is coming.
Iran warned its neighbours. They said they would attack US bases. This is if the US attacked them. This makes things very tense.
US officials are talking. They think about attacking Iran. But they have not decided. The US might hit certain places. These places may stop protests.
This news makes markets nervous. Gold prices are up. People buy gold because it is safe. Oil prices are also changing. Traders worry about oil.
A US attack could spread problems. Britain and the US are moving staff. This is a warning. European officials think a US attack is likely. It could happen soon. The next days are important.