"But with the development of the H-bomb, it become clear to Read that there was no safe place left on Earth, and he came back to United States in 1954[5] and devoted all his time to advocating the necessity of world law.

[10][11] In 1958,[12][5] Thane Read initiated a joint appeal by renowned individuals from around the world, which resulted in the issuance of the "Call to all nations."

[14] With the establishment of the WCCC in 1962, Thane Read became a central figure in promoting the call and garnering support for the World Constitutional Convention.

[15][16] Thanks to Thane Read's leadership and the dedication of the WCCC, the "Call to all Nations" for the World Constitutional Convention received overwhelming support from influential voices across diverse fields and countries.

[21] Read personally ratified the Constitution for the Federation of Earth at the 4th World Constituent Assembly (WCA),Troia, Portugal, in 1991.