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Test: North Korea has threatened to launch precision attack weapons at US Navy bases in South East Asia. Here an anti-aircraft missile is fired during a drill in front of the country's leader Kim Jong-un

Threat: A large number us military bases are within range of the new missiles - shown here

Observations: North Korea has stepped up its military exercises in response to what it regards as 'hostile' joint drills by South Korea and the United States. Here North Korean leader Kim Jong-Un uses binoculars to inspect a live fire drill

Weapons: Kim oversaw the live fire military drill using drones and cruise missile interceptors, according to the country's state media

Military: The threat to US bases from North Korean will be a cause for concern in Washington. Here North Korean tank troops take part in military drills

Force: The north's sabre rattling will also lead to increasing anxiety in neighbouring South Korea - which is a close ally of the US

Threats: North Korea today threatened to launch 'precision attack' weapons at U.S. navy bases if the country is provoked. The U.S. nuclear attack submarine USS Cheyenne arrives at a navy base in South Korea yesterday

Aggressive: North Korea's supreme military command said it had U.S. bases in Guam and Okinawa in their sights. This picture shows a military drill of the Korean People's Army at an undisclosed location in North Korea.

Threatened: F-15E Strike Eagles and a B-2 Spirit bomber fly in formation over Andersen Air Force Base in Guam - North Korea has threatened to attack the facility in retaliation for continuing sanctions and B-52 flights over the Korean peninsula

Andersen Air Force Base, Guam: North Korea is objecting to the flights of B-52's (pictured) over the Korean peninsula - threatening massive retaliation