Home2023 Treaties and Agreements ...Japan (23-328) – Agreement on Strengthening Critical Minerals Supply Chains hide Japan (23-328) – Agreement on Strengthening Critical Minerals Supply Chains TIAS Office of Treaty Affairs March 28, 2023 Trade and Investment: Critical Minerals Signed at Washington March 28, 2023; entered into force March 28, 2023. Download Agreement [2 MB] Tags Japan Trade and Investment Treaties