AUSTRALIA
- Extreme: Terrorist attack is imminent or has occurred.
- High: Terrorist attack is likely.
- Medium: Terrorist attack could occur.
- Low: Terrorist attack is not expected.
- Currently: High (raised from medium on September 12, 2014)
- Last time threat level was extreme: Never. Threat level was raised form low to medium following the September 11 attacks in 2001 and the Bali bombings in October 2002.
THE US
- Severe (Red)
- High (Orange)
- Elevated (Yellow)
- Guarded (Blue)
- Low (Green)
- Currently: Elevated
- Last time threat level was severe: August 10-September 14, 2006 in response to British authorities disrupting a major terror plot to blow up an aircraft. The threat level applied to commercial flights from UK. Extended to mid-September 2006 to coincide with the 5th anniversary of the September 11 attacks.
THE UK
- Critical: An attack is expected imminently.
- Severe: An attack is highly likely.
- Substantial: An attack is a strong possibility.
- Moderate: An attack is possible, but not likely.
- Low: An attack is unlikely.
- Currently: Severe
- Last time threat level was severe: August 1-10, 2006 in response to authorities disrupting a major terror plot to blow up an aircraft.
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