During World War II, Vișoianu was an unofficial advisor to the opposition to the dictatorial regime of Ion Antonescu. In April 1944 he went on a secret mission to Cairo, where he helped negotiate the terms of Romania's armistice with the Allies and its subsequent participation in the war against Nazi Germany.[2][3] On 25 May 1944, he presented an amended proposal for armistice terms, drawn by a committee consisting of Ghiță Popp [ro] and Ioan Hudiță (PNȚ), Bebe Brătianu and C. Zamfirescu (PNL), Ștefan Voitec and Iosif Jumanca (PSD), Petre Constantinescu-Iași and Vasile Bâgu (PCR).[3] The Romanians hoped to conclude terms only with the Anglo-Americans, and were reluctant to meet with the Soviets directly, whereas the Allies insisted on Russian priority.[4] As recounted by Vișoianu in a 1990 interview, the proposal was turned down by the Allies on June 1.[3]
Using the funds he and Cretzianu had appropriated in 1945, the two managed to wrest political control over the Romanian exiles from former prime-minister Nicolae Rădescu.[5] According to a report later written by Vișoianu, half the funds were collected by Cretzianu, and the rest were deposited in a secret fund with the Bank of Switzerland. Of this money, a small part was used to support the work of a group of Romanians at the Paris Peace Conference, and another part was used to support, for a while, the activities of Romanian exiles in the United States.[1]
Vișoianu, Constantin (1997). Misiunile mele: culegere de documente [My missions: collected documents]. Adrian Severin, George G. Potra, Nicolae Dinu, C. I. Turcu, Ion Calafeteanu, Nicolae C. Nicolescu. București: Editura Enciclopedia. ISBN973-45-0225-5. OCLC39812335.
^ abLucaci, Andrei (2004). "Exilul românesc după al II-lea război mondial". Carpica (in Romanian) (XXXIII). Complexul Muzeal "Iulian Antonescu" din Bacău: 212. ISSN1013-4182.