U.S. mulls expanding military ties with Japan despite Trump's criticism of the alliance

Tokyo — President Trump in early March criticized what he characterized as a one-sided security alliance between the U.S. and Japan. Officials in Japan have heard these comments from Mr. Trump before, and so far, they've continued shaping the country's national security plans based on the assurance of backing from the United States. 

Government officials admit they really have no other choice. 

"There is no Plan B for Japan other than the U.S.," Takuya Akiyama, Principal Deputy Director of the North American Affairs Bureau at the Japanese Ministry of Foreign Affairs, told CBS News. "Treaty wise and also as a physical presence, no other country can substitute the U.S. It is unthinkable."