The main opposition Democratic Party (DP) vowed Monday to go all-out in its campaign to reform the state intelligence agency, continuing their outdoor protests but launching a full-scale participation in parliamentary affairs. The move comes nearly two months after the DP took to the streets and set up a temporary office in tents outside Seoul City Hall, demanding President Park Geun-hye overhaul the National Intelligence Service (NIS) amid allegations that it tried to influence last year\'s presidential election.