Angelus has been involved in security and defense policies throughout his career as a journalist, consultant and global business development specialist. He was a producer for Radio America in Washington D.C. on geopolitical issues in 1986, and he produced the first Spanish-language news program for Gannett’s USA Today. Thereafter he co-founded Panamerica Inc. with former Ambassador of Panama to the U.S., Juan Sosa, followed by a National Forum Foundation assignment to Polish National Television in Kraków in 1992. 
In 1996 he founded USI Capital Corporation in Washington D.C. to focus on energy and security in the former Soviet bloc. Subsidiaries he established in Poland and Romania consulted for the hydrocarbon industry and published monthly local-language magazines while organizing international conferences featuring key corporate and government officials.
In the last decade, Angelus engaged in reconstruction efforts in Iraq and Afghanistan, based in the UAE, facilitating teaming arrangements between local firms and foreign partners. In 2008 he was the architect of the “Athens Summit – Global Climate and Energy Security” in Greece in association with the Andreas Papandreou family.