Indonesia OK with missile defence system

Indonesia says it doesn't have any problem with Australia potentially joining a missile defence system with Japan and the United States.

Australia is looking at taking part in the missile defence system, as a form of protection against rogue states such as North Korea and Iran.

Defence Minister Brendan Nelson said he would visit China next month to reassure it about the project, and also possibly Indonesia and India.

Indonesia's Defence Department has said it isn't concerned about the proposal, saying it had a good relationship with Australia, cemented in a security pact signed late last year.

"For Indonesia, it's the right of each country to develop a defence system based on their own perception," the department's director general for defence strategy Dadi Susanto said.

"For Indonesia towards Australia, there are no worries ... nor with Japan, because we have a good relationship with those countries.

"Indonesia and Australia are two countries that are destined to live as neighbours as long as the earth lives, so the only option is cooperating and not confronting."