Nine countries, including Japan, have jointly issued a statement welcoming the memorandum between the United States and Iran. The specifics of the memorandum or the identity of the other eight countries are not clear from the headline alone. This development likely occurred in the recent past or is an imminent diplomatic maneuver.

Japan recognizes the importance of maintaining peace and international order, often valuing diplomatic engagements and peaceful negotiations. The endorsement of the US-Iran memorandum implies Japan's positive stance towards resolving international disputes through dialogue, and its continuous efforts to promote understanding and cooperation among nations.

Similar issues in the US or EU often result in a mixed reaction, reflecting the diverse political landscape of these regions. However, there's typically a lean towards diplomatic negotiations and multilateral engagements to address international issues, aligning with Japan's approach in this case.