Nick Clegg told us that the EU Army is a Dangerous Fantasy

During the EU referendum Nick Clegg told us that the EU Army is a Dangerous Fantasy. 

https://youtu.be/4Ruu-4f6ugA

If the remain side had won the referendum then would the Brexit side now be allowed to call for a second referendum because the remain team had lied during the campaign? Of course not...

So was Nick Clegg lying in that debate, maybe to protect his EU pension, simply misinformed or careless as to what he said? Has the BBC asked Nick Clegg why he was so certain about there being no prospect of an EU Army? Of course not...