Prior to the 1964 Gulf of Tonkin Resolution, the United Kingdom began providing support to the South Vietnamese government in the form of advice on the use of police and paramilitary forces to combat a communist insurgency.[2] Conservative Prime Minister Winston Churchill refused American President Dwight Eisenhower's request to provide British military support for the French colonial forces engaged in the battle.[4] Wilson continued the previous Conservative government's policy of support for US military intervention in Vietnam,[4] though he was outspoken in his criticism of some aspects of the American war strategy, particularly the 1966 bombings of Haiphong and Hanoi.[4] Demonstrations were held outside the American Embassy in Grosvenor Square on March 17 and October 27, 1968, drawing thousands of protestors and culminating in violent clashes with the police.[21] Compared to Wilson, Conservative Prime Minister Edward Heath expressed greater rhetorical support of the American war effort in Vietnam.[22] The governments of Italy, Sweden, France, Belgium, The Netherlands, Denmark, Finland and Norway all condemned the high number of civilian deaths (over 2,000) caused by Operation Linebacker II, making Heath a rare source of international support for the bombings."Will the Prime Minister give a short, simple and categorical assurance that no matter what invitations his Government receive, British troops will never at any time be involved in the Vietnam conflict?"