United Nations Security Council Resolution 189, adopted unanimously on June 4, 1964, deplored an incident caused by the penetration of units of the Republic of Vietnam into Cambodia and requested compensation for the Cambodians. The resolution then requested that all States and authorities recognize and respect Cambodia's neutrality and territorial integrity, deciding to send 3 of its members to the places the most recent incidents had occurred to report back to the Council in 45 days with suggestions.