President Donald Trump told ABC News on Tuesday morning he is "not happy" with either Israel or Iran after the opening hours of a nascent ceasefire between the two combatants were marred by reported exchanges.

Israel’s military and its security and intelligence services are still investigating the extent of the damage to Iran’s nuclear and conventional military capabilities, military spokesman Effie Defrin said.

This week’s whipsaw chain of events involving Iran, Israel and the United States that culminated in a surprise ceasefire has raised many questions about how the Trump administration will approach the Middle East going forward.