void establish_embassy(struct player *pplayer, struct player *aplayer)
void send_diplomatic_meetings(struct connection *dest)
void reject_all_treaties(struct player *pplayer)
enum diplstate_type valid_dst_closest(struct player_diplstate *dst)
void set_diplstate_type(struct player_diplstate *state1, struct player_diplstate *state2, enum diplstate_type type)
void cancel_all_meetings(struct player *pplayer)