Possible Clues:

• Broadcast if the writer's keen observer of current events
• Said whether I could be a keen observer
• Keen observer, European, at present enthralled by river
• Vigilant attentiveness
• Observer's outlook sees very little about the year changing
• Watchful people keep this open
• With which Fleur Adcock and Patrick White needed to be watchful?
• We are the new and the old means by which to check conditions (8)
• Vigilance we certainly applied round that place
• One uses it to keep watch for developments