Which nation is calling for retaliation against the u. s. for their actions?

what are the consequences that the us may face because of their actions?

Iran.
The US may not face any consequences and it is happening in real-time so we do not know for sure what Iran will do. However, we can guess that Iran may try to carry out an attack on the US similar to 9/11 or target the president/other government officials since that is what they said. Instead of attacking the people of America, they’d rather attack higher-ups. It could also mess up trade lol. Hope this helps

Their worse are not meaningful;