President Donald Trump announced early on Tuesday that a ceasefire between Israel and Iran has gone into effect, which he said will end the 12-day exchange of attacks between the two countries, but the status of the ceasefire remained unclear as Israel continued to report missile attacks on its territory by Iran.

Iran and Israel have been exchanging attacks after Tehran ruled out nuclear negotiations with US while it is facing "Israeli aggression". Reports have suggested a nuclear facility site in Iran has been "targeted".

Just days later, Trump’s surprise announcement on Monday of an Israel-Iran ceasefire agreement suggests he may have bombed Tehran’s rulers back to the negotiating table. But a long list of big unanswered questions remains,