https://www.militarytimes.com/news/your-military/2020/01/19/marking-60th-anniversary-of-defense-treaty-abe-vows-to-boost-japans-role-in-us-alliance/
TOKYO — Japanese Prime Minister Shinzo Abe pledged Sunday to bolster his country’s role under its security pact with the U.S. in “outer space and cyberspace,” as the allies marked the 60th anniversary of a treaty that has been the basis for their postwar defense alliance.
Abe's grandfather, Nobusuke Kishi, who was prime minister at the time, signed the treaty in Washington on Jan. 19, 1960, with President Dwight Eisenhower. The treaty allows for the stationing of tens of thousands of U.S. troops and the deployment of American warships in Japan. In exchange, the U.S. is obligated to protect Japan in case of enemy attack.