Kuwait's Prime Minister Sheikh Nasser Al-Mohammad Al-Sabah concluded his official visit to Canada on Wednesday and headed to Washington for a two-day official visit. During his three-day visit, the Prime Minister met his Canadian counterpart Stephen Harper and discussed with him the existing cooperation between the two countries. Sheikh Nasser also met with Head of the Canadian Senate and Parliament Speaker and reviewed with them ways of bolstering cooperation in various fields, according to a report of Kuwait News Agency "KUNA".