So Oz decides that the risk of one of their aircraft being shot down over Syria and the pilot being captured by one of the groups that might not be friendly is too great. Who would blame them as the possibility of a internet death would I imagine bring the whole idea of Australian involvement in war zones far away from home to an end.
I'd also be interested if Mrs May thinks the same event might just be the straw that brings her down ?
Who backs down now, Trump or Putin/Assad ? Do we get a post Turkish shoot down fudge or do we find out how good S400 is ? And that would lead to ? Slowly the options for a sensible outcome are falling away. This is a cluster*uck cubed.