Peace Talks

• WWizards of the Coast2004-10-04
  Official Ruling
  Can be cast after your attack.
• WWizards of the Coast2004-10-04
  Official Ruling
  It affects the current turn and the next turn. This could affect the same player twice if they have two turns in a row, or it could affect different players. In a multiplayer game it affects exactly two turns, not a full round of turns.
• WWizards of the Coast2006-02-01
  Official Ruling
  Doesn’t skip the Combat Phase, just renders creatures unable to attack.
• WWizards of the Coast2016-06-08
  Official Ruling
  Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keywords are activated abilities and will have colons in their reminder text.

Rulings via Scryfall