A treaty is an agreement between States (countries) which is binding at international law. In some cases international organisations can be parties to treaties. An agreement between an Australian State or Territory and a foreign Government will not, therefore, be a treaty.
The term mini-stroke refers to a transient ischemic attack (TIA for short). In a mini-stroke, there is a short-term interruption in blood flow to the brain. This causes temporary stroke symptoms (often just for a few minutes), such as weakness or tingling in an arm or leg. Mini-strokes do not cause brain damage, but they are important warning signs that a person is at risk of having a stroke.
Effects of mini strokes are typically short-lived. Mini strokes often occur when plaques, which are cholesterol buildups in the arteries, break off and form a temporary blockage in the blood vessels of the brain. This only causes oxygen deprivation for a short time in the brain, and mass cell death does not occur.