Many Nations 'can', but there are inevitable political, domestic and fiscal factors at play.
Taking your first post ... "How many other countries, other than the US would be capable of this?" ... the answer is MANY. It's just that the US (aka The World's Policeman) has mechanisms which enable it to somehow wade in everywhere and anywhere, without UN authority or domestic approval [unlike UK].
I wish the the UK would stop following the US into their latest 'adventure' on autopilot, albeit that the issue is probably nearer home that it is for them.
Another "Zero Exit Strategy" operation begins. How I miss Colin Powell
