US President Trump says there will be major retaliation against Iran if they "do anything"

US President Trump speaking on the conflict with Iran

• he is willing to go after Iranian cultural sites since Iran has killed Americans
• he will consider releasing intelligence related to the killing of Iranian official
• there will be a "major retaliation" against Iran if Iran retaliates

Also:

• He does not think North Korea's Kim Jong Un will break his word
• but maybe he will