The US has recently held joint drills with the Philippines and is planning a similar move with Vietnam, saying the exercises are part of a regular schedule.

美国最近与菲律宾举行了联合军演，同时正在计划与越南开展一次类似的军演，并称这些演习是例行演习的一部分。

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Russian President Dmitri Medvedev referred to the conflict during Thursday's signing ceremony, saying it happened too recently to justify NATO exercises in Georgia scheduled to begin May 6.

VOA: standard.2009.04.30

On Friday, Russia - which shares a border with North Korea - summoned US and South Korean envoys to urge them to cancel the exercises, saying Moscow was "deeply concerned" about rising tensions in the region.

BBC: US envoy Bill Richardson warns of Korea tinderbox

On Wednesday Russia's Interfax news agency quoted military sources as saying Russian combined armed forces had begun scheduled exercises on the disputed islands.

BBC: Russian fighter jets 'breach Japan airspace'