Possible Clues:

• Period between wars
• Period when one is not at war
• Calm period European enters with deference to fellow European
• When there is no war
• Dove's love
• Cameron drinking ice tea mixed with a bit of elderberry for a spell of calm
• The gym class expert gets it back to me when the fight's over
• When there's no war, no new money goes on something to eat
• King, perhaps, heard of utter uprising. When this ends, it's war
• Postwar period