Syria was once among the closest allies of the Islamic republic, but the new government resents Tehran’s support for the Assad regime and has pledged not to allow attacks on Israel from its territory.

For days, Syrians have watched as Iranian missiles and Israeli interceptors light up the skies over their territory, but the new government in Damascus has so far remained officially silent on the unprecedented conflict.

As the attacks by Iran and Israel continue into their sixth day, here's a look at what we know about the conflict, and if the US will deploy troops.