@mysteryman,
For police action, you mean?
Do you have a link to where any nation yelled out for help from the US military?
Here's wiki's list of nations the US admin covertly tried to subvert over the years.
1 Prior to Cold War
1.1 Kingdom of Hawaii
1.2 Russia
2 During the Cold War
2.1 Communist states 1944-1989
2.2 Syria 1949
2.3 Iran 1953
2.4 Guatemala 1954
2.5 Tibet 1955-70s
2.6 Indonesia 1958
2.7 Cuba 1959
2.8 Democratic Republic of the Congo 1960-65
2.9 Iraq 1960-63
2.10 Dominican Republic 1961
2.11 South Vietnam 1963
2.12 Brazil 1964
2.13 Ghana 1966
2.14 Chile 1970-73
2.15 Argentina 1976
2.16 Afghanistan 1979-1989
2.17 Turkey 1980
2.18 Poland 1980-81
2.19 Nicaragua 1981-1990
2.19.1 Destablization through CIA Assets
2.19.2 Arming the Contras
2.20 Cambodia 1980-95
2.21 Angola 1980s
2.22 Philippines 1986
3 Since the end of the Cold War
3.1 Iraq 1992-1996
3.2 Afghanistan 2001
3.3 Iraq 2002-3
3.4 Venezuela 2002
3.5 Palestinian Authority, 2006-present
3.6 Somalia 2006-2007
3.7 Iran 2005-present
3.8 Libya 2011
3.9 Syria 2012