reply to post by bridas
It appears there are two different objects in the video. The first one can only be seen for a split second the second one does look solid and has a
saucer shape.
Is the video directly from BBC?

Originally posted by Silcone Synapse
It kind of looks like another aircraft IMO,but i`m no expert.
They are flying pretty close together,so maybe they are in formation when we see the Israeli jet break off.
SS out.Originally posted by Mondogiwa
To me, it looks as if the canopy has a mark on it or even perhaps some debri or scratches and that's what seems to look like a saucer! Most people think military aircraft are in pristine condition but they are not at all...especially in the field of operations.