BBC:
Saudi Arabia is facing a difficult dilemma. Ever since the US and Israel launched their war on Iran on 28 February, the Saudis have largely tried to stay out of it.
But now, after being attacked from three sides, the Saudis have had enough. This week, they carried out joint strikes with the US on Iranian proxy militias in Iraq who they believe have been launching drones at the Kingdom.
For Saudi Arabia the dilemma now is whether to keep on hitting back as a deterrent, or whether to try to de-escalate the situation, perhaps by paying off some of their adversaries.
So who is attacking who and why?
First, a bit of context. There are broadly two sides in the conflict that has been consuming the Gulf and other parts of the Middle East for five months now.
On one side there is Iran and its Islamic Revolutionary Guards Corps (IRGC). Allied to them are the Houthis in Yemen, a tribal group who took over much of the country in 2014.
Also backed by Iran are the Popular Mobilisation Forces in Iraq, the paramilitary group that has allegedly carried out 30 drone strikes on Saudi Arabia and has now been attacked in return.
Then there is Hezbollah in Lebanon, still a potent force but one that is currently lying low.
