GYEONGJU, South Korea — Foreign Minister Katsuya Okada offered support Sunday to his South Korean counterpart over the March sinking of the warship Cheonan and urged him to show "restraint" in dealing with Japan over a set of Korean-controlled islets that both sides claim.

Meeting on the sidelines of talks between the foreign ministers of Japan, China and South Korea, Okada and Yu Myung Hwan agreed that resuming the six-party talks on denuclearizing North Korea depends on the outcome of the probe into the Cheonan. Seoul suspects it was sunk by North Korea.

Okada and Yu also agreed to work together on a "positive final agreement" to conclude the ongoing review of the Nuclear Nonproliferation Treaty in New York.