Italy... when one group in the transport union goes on strike... all sections of the trasnport group local to the area go on strike.
Same in Spain.
France... well can you say "Wild Cat Strike"? On evening, we sat on the gound in Spain in the Spring of 2008 for two hours waiting to fly to the UK.
Will it work in the US? Not a prayer. When one airline goes on strike... the vultures from the other carriers circle the future carcus just waiting for the pickings.
When it comes to unity amongst pilots??? the US is at the bottom of the barrel on that subject.
The only group, in recent years that actually had the balls to stand up to management were the Amerijet Pilots.