Liberals and Australian Foreign Policy*

Since the Second World War, Liberal governments trying to adapt to a rapidly changing international environment have been mindful of Australian interests, and especially the ongoing search for security. Adapting to declining British power, to militant communism in East and Southeast Asia, and to a new, under‐defined alliance with the United States was no easy task. The Colombo Plan for aid to South and Southeast Asia and the dismantling of the White Australia Policy represented two forms of positive engagement with Asia. Since the 1970s, Liberal governments have played significant roles in the strengthening of the Commonwealth; strengthening ties with key countries in Asia; and maintaining a sometimes problematic security relationship with the United States. On this latter point, however, the most recent Liberal governments have not performed well, in becoming more subservient to the Americans.     

Hemolyzed blood and serum levels of delta 9-THC: effects on the performance of roadside sobriety tests

A pilot study was conducted to ascertain the range of induced hemolyzed blood/serum delta 9-tetrahydrocannabinol (delta 9-THC) concentrations in 58 human subjects. Subjects were tested within 5 min of smoking a delta 9-THC cigarette and then at half-hour intervals to 150 min. The subjects initially demonstrated a broad range of delta 9-THC hemolyzed blood levels, which settled within an hour to levels comparable to those measured in California drivers who had been stopped for impaired driving, arrested, and tested for delta 9-THC. Serum levels, when correlated with performance or roadside sobriety tests, demonstrated a broad range (5 to 183 ng/mL) of delta 9-THC levels and an "adaptation" effect in the subjects' perception of their own impairment. Although this preliminary study was not a double-blind placebo experiment, the overall performance of human subjects demonstrated the "adaptation" effect, which may be a significant factor in making judgments while performing such complex tasks as driving. Also, the effects of the drug extended beyond the period of elevated delta 9-THC blood levels, perhaps because of THC metabolites that may contribute to impairment or the persistence of THC in the central nervous system. This pilot study will lay the groundwork for a program designed to determine the epidemiology and behavior correlates of marijuana use in motorists.