Possible Clues:

• Capability to perform or produce
• Volume by Trump, in its local form, primarily authored by Moscow
• Limit big smoke rings primarily around faculty
• The wherewithal to beat a team from Bristol
• The amount that can be contained, space
• Size of stadium has to go one better than Beijing, perhaps
• Put limits on a large urban area's size
• Limit European policy connected with a built-up area
• Ability to contain or accommadate
• Amount that can be held - skill