Japan and the Philippines held a “two-plus-two” foreign and defense ministerial meeting for the first time ever last weekend.

The Philippines is the ninth country with which Japan has held a meeting of this format, and only the second Southeast Asian nation.

But what does that mean in practice? After all, the Japanese government has also held a two-plus-two with Russia, and the previous Southeast Asian government to meet in this format was Indonesia — not exactly major security partners for Japan.