Tokyo seeks US vow of support in East China Sea, as dispute with Beijing heats up
https://www.scmp.com/week-asia/politics/article/3118835/tokyo-seeks-us-vow-support-east-china-sea-dispute-beijing-heats
When Trump stated that US can't afford to maintain military troops overseas like East Asia, it was treated as sad news in Japan. That's because repeated invasion of China's ships reminds Japan of the importance of US troops in Okinawa.
So, Biden's standpoint must be welcomed by Japan's government, while it will disappoint the news agency of this article (South China Morning Post)
