Martínez Estrada left Cuba shortly after the Cuban Missile Crisis. With his health beginning to fail, with Cuba expelled from the OAS, and with a need to attend to his own economic affairs, he decided that he "would better serve the revolution from abroad." After a brief stop in Mexico he returned to Argentina, to Bahía Blanca, and to his status as a voice in the wilderness. He completed his three books on Martí (none of which were published in his lifetime and one of which remains unpublished ), wrote a work on Balzac, and continued to write poems (notably his Tres poemas del anochecer -- Three Poems at Dusk—the last work he published in Sur). He spoke of returning to Cuba; it is not entirely clear whether his failure to do so was entirely a matter of his health or related to traces of disillusionment with the revolution that are evidenced in his correspondence. He died November 4, 1964 in Bahía Blanca.
