In 1983, the arrest of Noureddin Kianouri, the first secretary of the Tudeh Party of Iran came as a shock to the international community. In a letter of condemnation, communist parties from Indonesia to Jamaica pledged solidarity with their Iranian comrades. The optimism initially brought by the 1979 revolution was severely reversed and the suppression of the Iranian Left by the Islamic government was regarded as an attack on the international Left. A significant voice of opposition came from Britain, with the Communist party of Great Britain (CPGB), the British Labor party, the trade unions and solidarity groups coming out in full support of the Tudeh and to take on the cause of Iran as their own. Although interest had existed since the 1940s, it was the 1979 revolution that firmly placed the Tudeh within the discourse of the British Left, energizing the movement and solidifying its internationalist credentials. Similarly, for the Tudeh, which had become side-lined in Iranian politics and had lost members to more radical strands of the Iranian Left, the attention it received helped renew its activism and sense of purpose.