Dee ihe na-aga n'ihu na paragraf a - Site n'afọ 1974 ruo 1976, e zigara ya ọrụ n'ụlọ ọrụ ndị nnọchi anya Canada na European Community na Brussels. Site na 1982 ruo 1986, ọ bụ onye ndụmọdụ na onye nnọchi anya Kọmitii Enyemaka Mmepe maka Organizationtù Maka Mmekọrịta na Mmepe na Paris. Site na 1989 ruo 1992, ọ bụ onye nnọchi anya na Cameroon, Chad na Central African Republic. Site na 1993 ruo 1996, ọ bụ onye nnọchi anya na Poland na, site na 1996 ruo 1999, na Russia, Armenia, Uzbekistan na Belarus. Leahy bụ Onye Nchịkọba Federal maka Ụbọchị Ndị Ntorobịa Ụwa nke 2002
Ọ dị mma. Site na 2004 ruo 2007, ọ bụ onye nnọchi anya na mpaghara Great Lakes nke Africa. Ọ bụ onye isi oche nke ndị enyi nke Great Lakes nke International Conference for Peace, Stability and Development in the Great Lakes Region. Site na 2008 ruo 2012, ọ bụ onye nnọchi anya Canada na Holy See na Rome. Mgbe ọ lara ezumike nká, a họpụtara ya onye nhazi mgbanwe nke Pope maka Ngalaba nke Mba Ndị Ọzọ nke Canada na 2013.