Does the current turn include the current wave of turns, like 'turn 3' for all players? Or is it limited to the end of each player's turn within the round?

Because so many card effects only last until the end of the turn, but become kind of limited in use when they run out and there is still 2 players to attack you. or where cards can only be used if someone else played a tactic 'this turn' - that tactic does not need to be played during your literal turn in multiplayer?

Comments, discussion?...