Related Clues:

• Socialiser
• Colleague is friendly, though not initially polite
• Friend in deed
• Form a coalition
• Buddy friendly, but not at first
• Brother-in-arms
• Join for the whole year
• Starts a liquid lunch yapping with friend
• Marble hall you will get covered
• Russia, in WWII
• Friend that often helps setter finalize adverbial clue
• Soft drink; type of tap
• Loses head on one of the sorties for friend
• One of 'us'
• Join forces, gathering right away