Possible Clues:

• Disruptive Italians worried about army officer
• Criminal action is almost entirely so
• Stalin roughly admits love for spies? It's the type of behaviour one expects from ruffians!
• It's unfriendly moving into Calais
• Disruptive cat is a lion on the rampage!
• Not friendly towards others, worker is one in pub blowing top
• Revolutionary Stalin admits love for spies? It's the type of behaviour one expects from a ruffian!
• Not a company man?
• Like 42-Across
• Avoiding the company of others